I
nte
rna
t
io
na
l J
o
urna
l o
f
Adv
a
nces in Applie
d Science
s
(
I
J
AAS)
Vo
l.
3
,
No
.
2
,
J
u
n
e
201
4
,
p
p
.
75
~
81
I
SS
N:
2252
-
8814
75
J
o
ur
na
l ho
m
ep
a
g
e
:
h
ttp
:
//ia
e
s
jo
u
r
n
a
l.c
o
m/o
n
lin
e/in
d
ex
.
p
h
p
/I
J
AAS
Es
ti
m
a
tion
of
V
er
tical D
ista
nc
e and
Reduc
e Lev
el usi
ng
M
o
dern
M
ine Survey
E
qu
ip
m
e
nts
(To
tal St
a
tion) at Su
b L
ev
el in
M
a
dd
ha
pa
ra
G
ra
nite
M
ine
,
Ba
ng
la
desh
M
d.
M
inh
a
j
Uddi
n M
o
nir
De
p
a
rtme
n
t
o
f
P
e
tr
o
leu
m
&
M
in
i
n
g
En
g
in
e
e
rin
g
,
Je
ss
o
re
Un
iv
e
rsit
y
o
f
S
c
ien
c
e
&
Tec
h
n
o
lo
g
y
,
Ba
n
g
lad
e
sh
Art
icle
I
nfo
AB
ST
RAC
T
A
r
ticle
his
to
r
y:
R
ec
eiv
ed
Ma
r
ch
2
4
,
2
0
1
4
R
ev
i
s
ed
Ma
y
12
,
2
0
1
4
A
cc
ep
ted
Ma
y
24
,
2
0
1
4
A
n
u
n
d
e
rg
ro
u
n
d
m
in
e
su
rv
e
y
w
o
rk
wa
s
d
o
n
e
u
si
n
g
T
o
tal
S
tati
o
n
(T
S
)
a
t
su
b
-
lev
e
l
(th
ird
d
ri
ll
in
g
d
r
if
t
to
c
a
g
e
s
h
a
f
t)
in
M
a
d
d
h
a
p
a
ra
G
ra
n
it
e
M
in
e
(M
G
M
).
T
h
e
M
G
M
is
situ
a
ted
a
t
M
a
d
d
h
a
p
a
ra
in
Din
a
j
p
u
r
d
istri
c
t,
NW
Ba
n
g
lad
e
sh
.
Ro
o
m
a
n
d
p
i
ll
a
r
su
b
-
lev
e
l
sto
p
i
n
g
u
n
d
e
rg
ro
u
n
d
m
in
in
g
m
e
th
o
d
a
p
p
li
e
d
in
M
G
M
a
n
d
e
x
tra
c
ted
e
c
o
n
o
m
ic
m
in
e
ra
l
s
(
g
ra
n
it
e
,
g
ra
n
o
d
io
rit
e
,
d
io
rit
e
e
tc)
f
ro
m
f
i
v
e
sto
p
e
s.
Ord
in
a
ry
su
r
v
e
y
e
q
u
ip
m
e
n
ts
(
m
e
a
su
rin
g
t
a
p
e
,
sta
ff
,
c
o
m
p
a
ss
,
ra
n
g
in
g
ro
d
,
a
u
to
m
a
ti
c
lev
e
l,
a
u
to
m
a
ti
c
th
e
o
d
o
li
te)
w
e
re
u
se
d
i
n
M
G
M
d
u
rin
g
th
e
d
e
v
e
lo
p
m
e
n
t
p
e
rio
d
f
o
r
th
e
c
o
n
str
u
c
ti
o
n
s
o
f
sh
a
f
ts,
u
n
d
e
rg
ro
u
n
d
ro
a
d
w
a
y
s,
d
ril
li
n
g
d
rif
ts,
su
m
p
s,
lo
a
d
in
g
b
u
n
k
e
r
,
c
ro
ss
c
u
ts,
sto
p
e
s
e
tc.
M
G
M
c
o
n
tain
s
tw
o
v
e
rti
c
a
l
sh
a
f
t
a
n
d
th
re
e
u
n
d
e
rg
ro
u
n
d
lev
e
ls;
v
e
n
ti
latio
n
lev
e
l
u
se
d
f
o
r
m
in
e
a
ir
v
e
n
ti
lati
o
n
,
su
b
-
lev
e
l
f
o
r
d
ril
li
n
g
o
r
b
las
ti
n
g
a
n
d
p
r
o
d
u
c
ti
o
n
lev
e
l
u
se
d
f
o
r
p
ro
d
u
c
ti
o
n
o
f
m
in
e
ra
l
o
re
s.
T
h
e
d
im
e
n
sio
n
(l×h
×
w
)
o
f
e
a
c
h
sto
p
e
is
2
7
6
,
0
0
0
m
3
(2
3
0
m
×
6
0
m
×
2
0
m
)
a
s
p
e
r
d
e
sig
n
.
M
o
d
e
rn
m
in
e
su
rv
e
y
in
g
in
M
G
M
re
d
u
c
e
th
e
e
rro
r
s
u
rv
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y
d
a
ta
w
h
ich
w
e
re
u
se
d
to
d
e
v
e
lo
p
th
e
f
u
rth
e
r
c
o
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c
ti
o
n
s
a
s
p
e
r
d
e
sig
n
a
n
d
a
lso
m
o
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it
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th
e
w
e
a
k
z
o
n
e
s
o
r
m
in
e
su
b
sid
e
n
c
e
ra
te
to
m
in
im
ize
m
in
e
a
c
c
id
e
n
ts.
Du
rin
g
th
e
y
e
a
r
o
f
2
0
0
8
-
2
0
0
9
,
Re
d
u
c
e
L
e
v
e
l
(R
L
)
wa
s
c
a
lcu
late
d
a
t
v
a
rio
u
s
p
o
i
n
ts.
T
h
e
f
irst
R.
L
in
th
e
m
o
u
th
o
f
th
ird
d
ril
li
n
g
d
rif
t
is
-
2
4
7
.
2
6
7
m
a
n
d
las
t
RL
n
e
a
r
th
e
c
a
g
e
sh
a
f
t
is
-
2
4
6
m
.
T
h
e
v
e
rti
c
a
l
d
istan
c
e
w
a
s
a
ls
o
c
a
lcu
late
d
w
it
h
tap
in
g
m
e
th
o
d
f
ro
m
su
rfa
c
e
(
m
e
a
n
s
e
a
le
v
e
l)
to
v
e
n
ti
latio
n
lev
e
l,
su
b
lev
e
l
a
n
d
p
ro
d
u
c
ti
o
n
lev
e
l
is
-
228
m
,
-
2
4
6
m
a
n
d
-
2
7
0
m
re
sp
e
c
ti
v
e
l
y
.
Re
g
u
lar
m
o
n
it
o
rin
g
w
it
h
T
S
a
n
d
o
t
h
e
r
m
o
d
e
rn
su
rv
e
y
a
c
c
e
ss
o
rie
s
in
M
G
M
m
a
y
g
iv
e
th
e
a
c
tu
a
l
su
rv
e
y
r
e
su
lt
s
w
h
ich
m
a
y
h
e
lp
s
to
id
e
n
ti
fy
th
e
u
n
d
e
rg
ro
u
n
d
w
e
a
k
z
o
n
e
s
(if
d
e
t
e
c
t)
a
n
d
re
c
o
m
m
e
n
d
s
f
o
r
u
n
d
e
rg
ro
u
n
d
m
in
e
su
p
p
o
rti
n
g
s
y
st
e
m
a
n
d
f
in
a
ll
y
M
G
M
d
im
in
ish
m
in
e
a
c
c
id
e
n
ts.
K
ey
w
o
r
d
:
Ma
d
d
h
ap
ar
a
g
r
an
ite
m
in
e
Mo
d
er
n
s
u
r
v
e
y
R
ed
u
ce
le
v
el
T
o
tal
s
tatio
n
Co
p
y
rig
h
t
©
201
4
In
s
t
it
u
te o
f
A
d
v
a
n
c
e
d
E
n
g
i
n
e
e
rin
g
a
n
d
S
c
ien
c
e
.
Al
l
rig
h
ts
re
se
rv
e
d
.
C
o
r
r
e
s
p
o
nd
ing
A
uth
o
r
:
Md
.
Min
h
aj
Ud
d
in
Mo
n
ir
,
Dep
ar
t
m
en
t o
f
P
etr
o
leu
m
a
n
d
Min
i
n
g
E
n
g
in
ee
r
i
n
g
,
Facu
lt
y
o
f
E
n
g
i
n
ee
r
i
n
g
a
n
d
T
e
ch
n
o
lo
g
y
,
J
ess
o
r
e
Un
iv
er
s
it
y
o
f
Scie
n
ce
an
d
T
ec
h
n
o
lo
g
y
,
J
ess
o
r
e
-
7408
,
B
an
g
lad
es
h
.
E
m
ail:
m
o
n
ir
_
p
m
e
@
y
ah
o
o
.
co
m
1.
I
NT
RO
D
UCT
I
O
N
Ma
d
d
h
ap
ar
a
Gr
an
ite
Min
e
(
MG
M)
is
s
it
u
ated
at
Ma
d
d
h
a
p
ar
a
in
Din
aj
p
u
r
d
is
tr
ict,
NW
B
an
g
lad
es
h
w
it
h
a
n
ar
ea
o
f
ab
o
u
t
1
.
4
4
k
m
²
,
b
et
w
ee
n
latit
u
d
e
2
5
º
3
3
´
1
5
´
´
to
2
5
º
3
4
´
1
5
´
´
N
an
d
lo
n
g
itu
d
e
8
9
º
0
3
´
3
0
´
´
to
8
9
º
0
4
´
5
3
´
´
E
(
Fi
g
u
r
e
1
)
.
I
n
1
9
7
4
,
Geo
lo
g
ical
Su
r
v
e
y
o
f
B
an
g
lad
es
h
r
an
a
n
e
x
p
lo
r
atio
n
s
u
r
v
e
y
in
Ma
d
h
y
ap
ar
a
an
d
b
ase
m
e
n
t
r
o
ck
is
en
co
u
n
ter
ed
at
a
d
e
p
th
o
f
1
3
0
m
w
i
th
esti
m
ated
r
eser
v
e
o
f
1
7
4
m
illi
o
n
to
n
s
o
f
P
r
e
-
C
a
m
b
r
ia
n
h
ar
d
r
o
ck
(
g
r
an
ite,
g
r
a
n
o
d
io
r
ite,
d
io
r
ite
etc.
)
.
MG
M
is
t
h
e
f
ir
s
t
e
x
p
er
ien
ce
o
f
u
n
d
er
g
r
o
u
n
d
h
ar
d
r
o
ck
m
i
n
i
n
g
a
n
d
th
e
s
ec
o
n
d
m
aj
o
r
m
i
n
i
n
g
p
r
o
j
ec
t
in
B
an
g
lad
es
h
[
7
]
.
R
o
o
m
a
n
d
p
illar
s
u
b
-
lev
el
s
to
p
in
g
u
n
d
er
g
r
o
u
n
d
m
i
n
i
n
g
m
e
th
o
d
i
s
u
s
ed
i
n
MG
M
f
o
r
t
h
e
e
x
tr
ac
tio
n
o
f
d
if
f
er
en
t
t
y
p
e
s
o
f
h
ar
d
r
o
ck
f
r
o
m
s
to
p
es.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8814
IJ
AA
S
Vo
l.
3
,
No
.
2
,
J
u
n
e
2
0
1
4
:
7
5
–
81
76
Sto
p
es
(
2
3
0
m
×
6
0
m
×
2
0
m
)
w
er
e
d
ev
elo
p
ed
as
p
er
d
esi
g
n
b
y
t
h
e
h
elp
o
f
s
u
r
v
e
y
eq
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ip
m
en
ts
i
n
MG
M
f
o
r
m
i
n
er
al
ex
tr
ac
tio
n
.
T
h
er
e
ar
e
f
i
v
e
s
to
p
es
i
n
MG
M,
t
w
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in
t
h
e
s
o
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t
h
er
n
s
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d
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ee
ar
e
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th
e
n
o
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th
er
n
s
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o
f
th
e
m
i
n
e
ar
ea
.
Du
r
in
g
th
e
d
ev
elo
p
m
en
t
w
o
r
k
o
f
M
G
M,
s
u
r
f
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e
a
n
d
u
n
d
er
g
r
o
u
n
d
co
n
s
tr
u
ctio
n
s
w
er
e
co
m
p
leted
as
p
er
d
esig
n
w
it
h
o
r
d
in
ar
y
s
u
r
v
e
y
in
s
tr
u
m
e
n
t
s
lik
e
m
ea
s
u
r
in
g
ch
ai
n
,
m
ea
s
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r
i
n
g
tap
e,
C
o
m
p
a
s
s
,
Au
to
m
a
tic
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el
a
n
d
th
eo
d
o
lites
.
Usi
n
g
th
e
s
e
t
y
p
es
o
f
s
u
r
v
e
y
i
n
s
tr
u
m
e
n
ts
g
av
e
t
h
e
er
r
o
r
r
esu
lt
s
(
d
is
tan
ce
a
n
d
an
g
le
s
)
.
A
s
a
r
es
u
lt M
GM
f
ac
ed
s
o
m
e
p
r
o
b
le
m
s
to
co
n
s
tr
u
ct
th
e
d
e
v
elo
p
m
e
n
t
w
o
r
k
s
as
p
er
d
esig
n
.
T
h
is
s
t
u
d
y
in
tr
o
d
u
ce
s
m
o
d
er
n
s
u
r
v
e
y
eq
u
ip
m
en
t
in
MG
M
l
ik
e
T
o
tal
St
atio
n
(
T
S).
Dig
ital
T
h
eo
d
o
lite,
Dig
ital
L
ev
el
in
g
,
GP
S
(
Glo
b
al
P
o
s
itio
n
in
g
S
y
s
t
e
m
)
,
R
A
B
co
d
e
s
taf
f
an
d
o
th
e
r
m
o
d
er
n
s
u
r
v
e
y
ac
ce
s
s
o
r
ies
w
h
ic
h
ar
e
also
u
s
ed
f
o
r
m
in
e
s
u
r
v
e
y
i
n
g
f
o
r
ac
cu
r
a
te
s
u
r
v
e
y
r
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lts
.
I
n
MG
M,
y
ea
r
l
y
/ev
er
y
s
i
x
m
o
n
th
s
m
i
n
e
s
u
r
v
e
y
i
n
g
b
y
t
h
ese
m
o
d
er
n
s
u
r
v
e
y
eq
u
ip
m
e
n
t
s
(
T
S),
m
in
e
ac
cid
e
n
ts
w
il
l
b
e
r
ed
u
ce
an
d
s
u
cc
es
s
f
u
l
l
y
co
m
p
lete
t
h
e
ex
tr
ac
tio
n
p
r
o
ce
s
s
o
f
m
i
n
er
al
d
ep
o
s
its
w
i
th
i
n
th
e
m
i
n
e
li
f
e
ti
m
e.
Fig
u
r
e
1
.
L
o
ca
tio
n
m
ap
o
f
MG
M
ar
ea
(
m
o
d
i
f
ied
af
ter
[
6
]
,
[
7
]
)
T
h
e
m
ai
n
tar
g
et
o
f
s
u
r
v
e
y
in
g
i
s
to
d
eter
m
in
e
t
h
e
r
elati
v
e
p
o
s
itio
n
s
o
f
p
o
in
ts
ab
o
v
e,
o
n
o
r
b
en
ea
th
t
h
e
ea
r
th
’
s
s
u
r
f
ac
e
an
d
lo
ca
tin
g
th
e
p
o
in
t
in
th
e
f
ield
.
Min
e
s
u
r
v
e
y
in
g
is
also
co
n
ce
r
n
ed
w
it
h
s
u
r
v
e
y
s
o
n
th
e
la
n
d
s
u
r
f
ac
e
an
d
u
n
d
er
g
r
o
u
n
d
d
u
r
in
g
t
h
e
p
r
o
s
p
ec
tin
g
an
d
ex
t
r
ac
tio
n
o
f
ec
o
n
o
m
ic
m
i
n
er
al
d
ep
o
s
its
an
d
th
e
co
n
s
tr
u
ct
io
n
o
f
m
i
n
i
n
g
p
lan
t
s
,
th
e
r
es
u
lts
o
f
s
u
r
v
e
y
s
ar
e
t
h
e
n
u
s
ed
f
o
r
p
lo
ttin
g
t
h
e
p
la
n
ts
o
f
m
i
n
in
g
w
o
r
k
s
a
n
d
b
ed
d
in
g
co
n
d
itio
n
s
o
f
d
ep
o
s
it
s
an
d
al
s
o
f
o
r
th
e
s
o
lu
t
io
n
o
f
v
ar
io
u
s
p
r
o
b
le
m
s
o
f
t
h
e
m
i
n
in
g
g
eo
m
etr
y
[
5
]
.
T
h
ese
m
i
n
e
s
u
r
v
e
y
s
en
s
u
r
e
th
e
s
a
f
e
a
n
d
ef
f
ic
ien
t
e
x
p
lo
i
tatio
n
o
f
m
i
n
er
al
d
ep
o
s
its
o
n
t
h
e
b
ases
o
f
t
h
e
in
s
tr
u
m
en
ta
l
m
ea
s
u
r
e
m
en
t
s
p
er
f
o
r
m
ed
u
n
d
er
p
ar
ticu
lar
m
i
n
in
g
an
d
g
eo
lo
g
ical
co
n
d
itio
n
s
o
f
m
i
n
in
g
p
lan
t
s
.
Min
e
s
u
r
v
e
y
i
n
g
i
s
u
s
ed
n
o
t
o
n
l
y
b
ef
o
r
e
a
m
i
n
e
d
ev
elo
p
m
en
t
b
u
t
also
m
o
n
ito
r
in
g
d
u
r
in
g
m
i
n
e
lif
e
t
i
m
e
.
Mo
d
er
n
m
in
e
s
u
r
v
e
y
in
g
h
as
t
o
d
ea
l
w
it
h
m
o
r
e
d
iv
er
s
if
ied
an
d
co
m
p
lex
p
r
o
b
le
m
s
.
Field
m
ea
s
u
r
e
m
e
n
t
s
an
d
o
f
f
ice
w
o
r
k
i
n
m
i
n
e
s
u
r
v
e
y
in
g
ar
e
n
o
w
ca
r
r
ied
o
u
t
w
it
h
u
s
e
o
f
d
iv
er
s
e
an
d
r
ath
er
co
m
p
l
icate
d
in
s
tr
u
m
e
n
t
s
an
d
d
ev
ices,
s
o
lv
i
n
g
an
i
m
p
o
r
tan
t
g
r
o
u
p
o
f
p
r
o
b
le
m
s
ass
o
ci
ated
w
it
h
th
e
i
n
v
e
s
ti
g
atio
n
o
f
th
e
co
n
f
ig
u
r
atio
n
s
in
s
p
ec
ial
g
r
ap
h
s
.
Ma
n
y
m
i
n
e
s
p
ec
ialis
t
w
o
r
k
ed
o
n
th
e
p
etr
o
g
r
ap
h
y
o
f
b
ase
m
en
t
c
o
m
p
le
x
,
alter
n
a
tiv
e
v
en
t
ilatio
n
s
h
a
f
t
co
n
s
tr
u
c
tio
n
f
o
r
p
r
o
p
er
m
i
n
e
v
e
n
ti
latio
n
a
n
d
o
p
tim
u
m
s
u
p
p
o
r
t
d
esig
n
in
p
r
o
d
u
ctio
n
lev
el
o
f
Ma
d
d
h
ap
ar
a
Gr
an
ite
Mi
n
e
[
3
]
,
[
7
]
-
[
8
]
.
T
h
er
e
w
as
n
o
r
esear
ch
w
o
r
k
o
n
m
o
d
er
n
m
i
n
e
s
u
r
v
e
y
i
n
g
i
n
Ma
d
d
h
ap
ar
a
Gr
an
ite
Min
e.
T
h
is
m
i
n
e
s
u
r
v
e
y
w
o
r
k
s
w
a
s
d
o
n
e
af
ter
th
e
d
e
v
elo
p
m
e
n
t
o
f
MG
M.
I
n
th
e
ea
r
l
y
p
er
io
d
m
i
n
i
n
g
,
m
i
n
e
s
u
r
v
e
y
o
r
w
er
e
u
s
ed
o
r
d
in
ar
y
s
u
r
v
e
y
in
s
tr
u
m
en
t
s
f
o
r
m
ea
s
u
r
i
n
g
p
o
in
ts
,
d
i
s
tan
ce
s
a
n
d
an
g
le
s
w
h
ic
h
w
er
e
f
u
ll
o
f
er
r
o
r
s
u
r
v
e
y
d
ata.
A
s
a
r
e
s
u
l
t
m
in
e
en
g
in
ee
r
f
ac
ed
d
if
f
er
en
t
t
y
p
es
o
f
m
in
e
ac
cid
e
n
t
s
b
o
th
in
s
u
r
f
ac
e
a
n
d
u
n
d
er
g
r
o
u
n
d
m
in
e
s
.
P
.
P
.
B
ah
u
g
u
n
a
a
n
d
D.
Ku
m
ar
(
2
0
0
8
)
s
u
g
g
est
f
o
r
u
s
i
n
g
r
o
b
o
tic
to
tal
s
tatio
n
s
a
n
d
GP
S,
d
i
g
ital
p
h
o
to
g
r
a
m
m
etr
ic
tech
n
iq
u
e
s
,
h
i
g
h
r
eso
l
u
tio
n
s
ate
llit
e
i
m
a
g
er
y
,
s
atellite,
air
b
o
r
n
e
an
d
ter
r
estrial
laser
s
ca
n
n
er
s
d
ev
ices
to
u
s
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r
ea
l
-
ti
m
e
m
o
n
i
to
r
in
g
s
y
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te
m
s
in
m
i
n
es
[
2
]
.
T
h
e
co
m
i
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g
o
f
GP
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T
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an
d
d
ig
ital
th
eo
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m
ad
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ac
q
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i
s
itio
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o
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ata
m
u
c
h
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ler
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n
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f
aster
.
T
h
e
u
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o
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la
test
m
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tech
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Geo
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w
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I
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d
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Min
es
[
2
]
.
P
.
P
.
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ah
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(
2
0
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also
d
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ated
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[
1
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.
I
n
2
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1
3
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V.
R
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R
ak
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i
m
o
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D.
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Min
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etic
elec
tr
o
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ic
o
p
tical
in
s
tr
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m
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n
ts
(
T
S)
Evaluation Warning : The document was created with Spire.PDF for Python.
IJ
AA
S
I
SS
N:
2252
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E
s
tima
tio
n
o
f V
erti
ca
l D
is
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n
d
R
e
d
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ce
Leve
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s
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ern
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e
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(
Md
.
Min
h
a
j U
d
d
in
Mo
n
ir
)
77
in
m
i
n
es
[
9
]
.
Z
.
Z
en
g
a
n
d
Y.
W
an
g
(
2
0
1
2
)
co
n
clu
d
ed
f
o
r
u
s
in
g
T
S
s
u
r
v
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y
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n
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n
d
er
g
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o
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d
r
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ad
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a
y
h
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d
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n
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to
s
o
lv
e
th
e
m
i
n
e
p
r
o
b
lem
s
an
d
ac
cid
en
ts
[
1
0
]
.
T
h
e
ai
m
s
o
f
th
is
s
tu
d
y
ar
e
to
i
n
tr
o
d
u
ce
T
S
in
MG
M
a
n
d
ca
l
cu
late
t
h
e
v
er
tical
d
is
ta
n
ce
f
r
o
m
s
u
r
f
ac
e
(
m
ea
n
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v
el)
to
v
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n
tilatio
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el,
s
u
b
-
lev
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d
p
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d
u
ctio
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a
n
d
also
ca
lcu
late
s
o
m
e
R
L
v
alu
e
s
f
r
o
m
th
ir
d
n
o
.
d
r
illi
n
g
d
r
if
t
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ca
g
e
s
h
a
f
t
i
n
s
u
b
-
le
v
el
to
id
en
ti
f
y
a
ll
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n
d
er
g
r
o
u
n
d
m
i
n
e
co
n
s
tr
u
ct
io
n
s
ar
e
lev
eled
o
r
n
o
t
as
p
er
d
esig
n
.
T
h
is
s
t
u
d
y
a
ls
o
d
e
m
o
n
s
tr
ate
its
p
o
ten
t
ial
as
a
co
m
p
le
m
e
n
tar
y
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r
alter
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ate
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b
s
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ce
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e
tectio
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d
m
o
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ito
r
in
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in
MG
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eg
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lar
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y
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s
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n
g
T
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m
i
n
e
s
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r
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y
s
y
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te
m
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d
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n
all
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m
en
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f
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u
b
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r
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th
er
m
i
n
e
a
cc
id
en
ts
w
il
l b
e
co
n
tr
o
lled
o
r
n
o
t.
2.
M
I
NE
SURVE
Y
I
N
G
WI
T
H
T
S
T
S is
u
s
ed
to
m
ea
s
u
r
e
h
o
r
izo
n
tal
an
d
v
er
tica
l a
n
g
le
s
w
it
h
d
is
tan
ce
s
d
u
r
in
g
s
u
r
v
e
y
i
n
g
i
n
M
GM
w
h
ic
h
ca
n
b
e
u
tili
ze
d
i
n
v
ar
io
u
s
s
itu
a
tio
n
s
f
o
r
it
s
ea
s
y
o
p
er
atio
n
a
n
d
m
o
r
e
ac
cu
r
ate
r
e
s
u
l
ts
b
y
a
s
y
s
te
m
atic
w
a
y
.
I
t
i
s
an
elec
tr
o
n
ic
o
r
o
p
tical
in
s
tr
u
m
e
n
t
u
s
ed
in
m
o
d
er
n
s
u
r
v
e
y
in
g
.
I
t
is
also
an
elec
tr
o
n
ic
th
eo
d
o
lite
(
tr
an
s
it)
in
te
g
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ated
w
it
h
an
elec
tr
o
n
ic
d
is
tan
ce
m
e
ter
(
E
DM
)
to
r
ea
d
s
lo
p
e
d
is
tan
ce
s
f
r
o
m
th
e
in
s
tr
u
m
en
t to
a
p
ar
ticu
lar
p
o
in
t.
T
h
e
b
en
e
f
its
o
f
T
S
w
ill
o
u
t
w
eig
h
th
e
d
o
w
n
s
id
es,
i
n
m
o
s
t c
ases
,
b
ec
au
s
e
o
f
its
all
-
i
n
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s
i
v
e
f
ea
t
u
r
es
an
d
d
ig
ital
in
te
g
r
atio
n
(
Fi
g
u
r
e
2
)
.
I
t
in
te
g
r
ates
t
h
eo
d
o
lite
f
u
n
cti
o
n
s
i
n
o
r
d
er
to
m
ea
s
u
r
e
a
n
g
le
s
a
n
d
d
is
ta
n
ce
w
i
th
an
E
DM
(
elec
tr
o
n
ic
d
is
tan
ce
m
eter
)
.
I
t
also
u
s
es
a
s
y
s
te
m
o
f
p
r
is
m
s
an
d
laser
s
to
d
ev
elo
p
d
ig
ital
r
ea
d
in
g
s
o
f
all
th
e
m
ea
s
u
r
e
m
en
t
s
.
All
o
f
th
e
in
f
o
r
m
atio
n
g
at
h
er
ed
w
it
h
th
e
T
S
is
s
to
r
e
d
in
an
ex
ter
n
al
co
m
p
u
ter
w
h
er
e
d
ata
ca
n
b
e
m
a
n
ip
u
lated
a
n
d
ad
d
ed
to
C
A
D
p
r
o
g
r
a
m
s
.
T
h
e
m
ea
s
u
r
i
n
g
s
eq
u
en
ce
is
in
i
tiat
ed
an
d
a
s
ig
n
al
i
s
s
en
t
to
t
h
e
r
ef
lecto
r
(
o
n
e
s
et
o
r
th
r
ee
s
et
p
r
is
m
)
a
n
d
a
p
ar
t
o
f
th
is
s
ig
n
al
is
r
et
u
r
n
ed
to
th
e
T
S.
T
h
is
s
ig
n
al
i
s
th
en
a
n
al
y
ze
d
to
ca
lcu
late
th
e
s
lo
p
e
d
is
tan
ce
to
g
eth
er
w
it
h
t
h
e
h
o
r
izo
n
tal
a
n
d
v
er
tical
an
g
les.
T
S
ca
n
also
b
e
u
s
ed
w
i
th
o
u
t
r
e
f
lecto
r
s
a
n
d
t
h
e
telesco
p
e
i
s
p
o
in
ted
at
t
h
e
p
o
in
t
t
h
at
n
ee
d
s
to
b
e
m
ea
s
u
r
e
d
.
I
t
is
lev
eled
an
d
ce
n
ter
ed
in
th
e
s
a
m
e
w
a
y
as
a
th
eo
d
o
lite.
Mo
s
t
T
S
h
a
v
e
a
d
i
s
tan
ce
m
ea
s
u
r
i
n
g
r
an
g
e
o
f
u
p
to
a
f
e
w
k
m
,
w
h
e
n
u
s
i
n
g
a
p
r
is
m
,
a
n
d
a
r
a
n
g
e
o
f
at
least
1
0
0
m
i
n
r
ef
lecto
r
less
m
o
d
e
an
d
a
n
ac
c
u
r
ac
y
o
f
2
-
3
m
m
at
s
h
o
r
t
r
an
g
es,
w
h
ic
h
w
ill
d
ec
r
ea
s
e
to
ab
o
u
t
4
-
5
m
m
at
1
k
m
(
Fi
g
u
r
e
2
)
.
W
h
en
a
d
is
tan
ce
is
m
ea
s
u
r
ed
w
ith
T
S,
an
elec
tr
o
m
ag
n
etic
w
av
e
o
r
p
u
ls
e
is
u
s
ed
f
o
r
t
h
e
m
ea
s
u
r
e
m
en
t
w
h
ic
h
i
s
p
r
o
p
ag
ated
th
r
o
u
g
h
t
h
e
at
m
o
s
p
h
er
e
f
r
o
m
th
e
in
s
tr
u
m
e
n
t
to
r
ef
lecto
r
o
r
tar
g
et
an
d
b
ac
k
d
u
r
in
g
t
h
e
m
ea
s
u
r
e
m
e
n
t.
I
t
is
ac
tiv
a
ted
th
r
o
u
g
h
it
s
co
n
tr
o
l
p
an
el,
w
h
ic
h
co
n
s
is
t
s
o
f
a
k
e
y
b
o
ar
d
an
d
m
u
ltip
le
l
in
e
s
L
C
D
1
k
m
(
Fi
g
u
r
e
2
)
.
A
n
u
m
b
er
o
f
in
s
tr
u
m
e
n
ts
h
av
e
t
w
o
co
n
tr
o
l
p
an
el
s
,
o
n
e
o
n
e
ac
h
f
ac
e,
w
h
ic
h
m
ak
e
s
t
h
e
m
ea
s
ier
to
u
s
e
(
Fi
g
u
r
e
2
)
.
I
m
p
o
r
tan
t
k
e
y
s
an
d
it
s
f
u
n
ctio
n
s
o
f
T
S a
r
e
s
h
o
w
n
in
T
ab
le
1
.
T
ab
le
1
.
T
h
e
co
m
m
o
n
k
e
y
s
,
n
a
m
e
an
d
it
s
f
u
n
c
tio
n
s
o
f
T
S
Key
s
N
a
m
e
Fun
c
t
i
o
n
A
n
g
l
A
n
g
l
e
M
e
a
s.
K
e
y
A
n
g
l
e
M
e
a
su
r
e
me
n
t
mo
d
e
(
U
p
)
D
i
st
a
n
c
e
M
e
a
s.
K
e
y
D
i
st
a
n
c
e
M
e
a
su
r
e
me
n
t
mo
d
e
(
D
o
w
n
)
C
o
o
r
d
i
n
a
t
e
M
e
a
s.
K
e
y
C
o
o
r
d
i
n
a
t
e
M
e
a
su
r
e
me
n
t
mo
d
e
(
L
e
f
t
)
M
e
n
u
M
e
n
u
K
e
y
S
w
i
t
c
h
me
n
u
mo
d
e
a
n
d
N
o
r
mal
mo
d
e
(
R
i
g
h
t
)
Esc
Esc
a
p
e
K
e
y
R
e
t
u
r
n
t
o
t
h
e
me
a
s
.
M
o
d
e
o
r
p
r
e
v
i
o
u
s
l
a
y
e
r
mo
d
e
.
P
o
w
e
r
P
o
w
e
r
K
e
y
F
o
r
O
n
/
O
f
f
so
u
r
c
e
.
F1
-
F4
S
o
f
t
K
e
y
(
F
u
n
c
t
i
o
n
K
e
y
)
D
i
sp
l
a
y
C
o
r
r
e
sp
o
n
d
i
n
g
so
f
t
k
e
y
me
ss
a
g
e
.
0
-
9
N
u
mb
e
r
k
e
y
I
n
p
u
t
n
u
m
b
e
r
,
C
h
a
r
a
c
t
e
r
s,
p
o
i
n
t
s
,
mi
n
u
t
e
s e
t
c
.
S
t
a
r
t
K
e
y
En
t
e
r
S
t
a
r
t
mo
d
e
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8814
IJ
AA
S
Vo
l.
3
,
No
.
2
,
J
u
n
e
2
0
1
4
:
7
5
–
81
78
Fig
u
r
e
2
.
T
o
tal
s
tatio
n
an
d
its
d
if
f
er
e
n
t p
ar
ts
3.
RE
SU
L
T
S
A
ND
D
I
SCU
SS
I
O
N
3
.
1
.
T
ra
ns
f
er
ring
a
H
eig
ht
in
t
o
V
ent
ila
t
io
n
L
ev
el,
S
ub
lev
el
a
nd
P
ro
du
ct
io
n
L
ev
el
in M
G
M
Ver
tical
d
is
ta
n
ce
alo
n
g
th
e
c
ag
e
s
h
a
f
t
i
n
M
GM
i
s
ca
r
r
ied
o
u
t
f
r
o
m
s
u
r
f
ac
e
(
m
ea
n
s
ea
lev
el)
to
s
u
b
le
v
el
b
y
a
s
y
s
te
m
atic
w
a
y
.
Up
o
n
d
ee
p
en
in
g
th
e
ca
g
e
s
h
af
t
ab
o
u
t
4
0
-
5
0
m
,
au
x
iliar
y
p
o
in
t
1
is
p
lace
d
o
n
th
e
w
all
o
f
s
h
a
f
t,
an
d
t
h
e
n
v
e
r
tical
d
is
tan
ce
h
1
b
et
w
ee
n
p
o
in
t
X
a
n
d
1
is
m
ea
s
u
r
ed
w
i
th
s
till
tap
e
(
Fi
g
.
3
)
.
Up
o
n
d
e
ep
en
in
g
t
h
e
m
in
e
s
h
af
t
ab
o
u
t
4
0
-
5
0
m
f
r
o
m
p
o
in
t
1
au
x
i
liar
y
p
o
in
t
2
is
p
lace
d
o
n
th
e
w
all
o
f
th
e
s
h
a
f
t,
a
n
d
th
e
n
v
er
tical
d
i
s
tan
ce
h
2
i
s
m
ea
s
u
r
ed
w
it
h
s
t
ill
t
ap
e.
C
ag
e
s
h
a
f
t
l
if
t
is
u
s
ed
f
o
r
m
ea
s
u
r
in
g
t
h
es
e
v
er
tical
d
is
tan
ce
s
.
I
n
th
is
w
a
y
th
e
to
tal
v
er
tica
l
d
is
ta
n
ce
i
s
m
ea
s
u
r
ed
u
n
ti
l
t
h
e
v
en
tilatio
n
le
v
el,
s
u
b
le
v
el,
a
n
d
p
r
o
d
u
ctio
n
lev
el
b
y
t
h
e
f
o
llo
win
g
eq
u
atio
n
s
.
T
h
e
d
ep
th
o
f
v
er
tical
s
h
a
f
t i
s
a
s
f
o
llo
w
s
:
Δ
H
=
h
1
+
h
2
+ . .
. . .
. . .
. + h
n
(I)
T
h
e
h
eig
h
t o
f
B
M
in
t
h
e
m
in
e
is
ca
lcu
la
ted
as
f
o
llo
w
s
:
Z
BM
=
Z
A
–
Δ
H
.
.
.
.
.
.
.
.
(
2
)
I
n
ca
s
e
o
f
MG
M
it
w
i
ll b
e:
Z
x
=
3
1
.
2
m
,
Δ
H
=
3
0
1
.
2
m
Usi
n
g
eq
u
at
io
n
(
2
)
th
e
v
er
tical
d
is
tan
ce
i
n
th
e
p
r
o
d
u
ctio
n
le
v
el
is
m
ea
s
u
r
ed
.
Z
BM
=
Z
x
–
Δ
H
=
3
1
.
2
m
–
3
0
1
.
2
m
=
-
2
7
0
m
Si
m
i
lar
l
y
,
t
h
e
v
er
tical
d
is
ta
n
c
e
is
m
ea
s
u
r
ed
i
n
t
h
e
v
en
ti
lati
o
n
lev
e
l
is
-
2
2
8
m
,
s
u
b
lev
e
l
is
-
2
4
6
m
.
Du
r
in
g
th
e
d
ev
elo
p
in
g
p
er
io
d
o
f
MG
M
m
in
e
s
h
a
f
t,
t
h
e
v
er
ti
ca
l
d
is
ta
n
ce
f
r
o
m
th
e
s
u
r
f
ac
e
(
m
ea
n
s
ea
lev
el)
to
v
en
t
ilatio
n
le
v
el,
s
u
b
lev
el
a
n
d
p
r
o
d
u
ctio
n
lev
el
w
as
-
2
2
8
m
,
-
2
4
6
m
an
d
-
2
7
0
m
r
esp
ec
tiv
el
y
w
h
ich
is
s
a
m
e
as
t
h
e
r
ec
en
t
s
u
r
v
e
y
r
es
u
lts
.
T
h
is
i
n
d
icate
s
t
h
at
n
o
v
er
tical
d
is
p
lace
m
e
n
t
is
o
cc
u
r
r
ed
alo
n
g
th
e
ca
g
e
s
h
a
f
t
a
n
d
th
is
ca
g
e
s
h
a
f
t is sa
f
e
f
o
r
m
i
n
i
n
g
o
p
er
atio
n
s
.
Fig
u
r
e
3
.
T
r
an
s
f
er
R
L
f
r
o
m
s
u
r
f
ac
e
to
s
u
b
lev
e
l (
m
o
d
if
ied
a
f
ter
[
5
]
)
Evaluation Warning : The document was created with Spire.PDF for Python.
IJ
AA
S
I
SS
N:
2252
-
8814
E
s
tima
tio
n
o
f V
erti
ca
l D
is
ta
n
ce
a
n
d
R
e
d
u
ce
Leve
l u
s
in
g
Mo
d
ern
Min
e
S
u
r
ve
y…
(
Md
.
Min
h
a
j U
d
d
in
Mo
n
ir
)
79
Fig
u
r
e
4
.
(
a)
MG
M
ca
g
e
s
h
a
f
t
at
s
u
r
f
ac
e;
(
b
)
MG
M
ca
g
e
s
h
a
f
t a
t
-
2
4
6
m
(
s
u
b
-
lev
el)
; (
c)
M
GM
u
n
d
er
g
r
o
u
n
d
ro
ad
w
a
y
n
ea
r
t
h
ir
d
d
r
illi
n
g
d
r
if
t
3
.
2
.
H
o
rizo
nta
l C
o
nn
ec
t
io
n
Su
rv
ey
into
S
ub
lev
el
in M
G
M
Du
r
in
g
m
i
n
e
s
u
r
v
e
y
i
n
g
i
n
M
GM
a
h
o
r
izo
n
tal
co
n
n
ec
tio
n
s
u
r
v
e
y
in
to
s
u
b
le
v
el
is
p
er
f
o
r
m
ed
in
to
a
s
y
s
te
m
a
tic
w
a
y
.
C
o
o
r
d
in
ates
tr
an
s
f
er
r
ed
in
to
t
h
e
u
n
d
er
g
r
o
u
n
d
w
it
h
T
S
b
y
s
et
u
p
it
n
ea
r
th
e
ca
g
e
s
h
a
f
t
a
n
d
m
ea
s
u
r
in
g
th
e
r
ea
d
i
n
g
(
Fig
u
r
e
3
,
4
)
.
A
cc
o
r
d
in
g
to
co
o
r
d
in
ates
tr
an
s
f
er
r
ed
i
n
to
th
e
m
in
e,
t
h
er
e
ar
e
h
o
r
izo
n
tal
an
d
v
er
tical
co
n
n
ec
tio
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s
(
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g
u
r
e
3
)
.
A
p
p
r
o
ac
h
p
o
in
t
B
is
e
s
tab
lis
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ed
o
n
th
e
s
u
r
f
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a
d
is
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t
m
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3
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f
r
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e
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d
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w
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f
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m
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le
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u
r
e
3
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ts
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n
t
h
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r
f
ac
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(
g
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n
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ts
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i
x
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i
n
th
e
w
o
r
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s
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b
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n
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r
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g
d
r
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to
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h
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h
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Fig
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r
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2
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p
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6
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lc
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s
y
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te
m
s
h
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ld
b
e
r
ed
esig
n
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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Evaluation Warning : The document was created with Spire.PDF for Python.
IJ
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f
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T
h
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y
p
e
s
o
f
r
eg
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lar
m
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n
m
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(
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s
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ld
b
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tak
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o
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th
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w
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k
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d
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v
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m
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f
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ACK
NO
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D
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M
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W
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r
atef
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Gr
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in
g
.
T
h
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k
s
al
s
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to
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ta
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f
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k
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elp
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Saj
ed
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r
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m
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s
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y
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g
.
RE
F
E
R
E
NC
E
S
[1
]
Ba
h
u
g
u
n
a
P.
P.,
"
Co
rre
latio
n
su
r
v
e
y
f
o
r
sh
a
f
t
d
e
e
p
e
n
in
g
in
Dig
w
a
d
ih
u
n
d
e
rg
ro
u
n
d
c
o
a
l
m
in
e
,"
J
o
u
rn
a
l
o
f
S
u
rv
e
y
in
g
En
g
i
n
e
e
rin
.
2
0
0
3
,
V
o
l.
1
2
9
,
p
p
.
3
3
-
36
.
[2
]
Ba
h
u
g
u
n
a
P.
P.
,
e
t
a
l
.
,
"
M
o
d
e
rn
su
rv
e
y
in
stru
m
e
n
ts
a
n
d
th
e
ir
u
se
in
m
in
e
su
rv
e
y
in
g
,"
E
x
e
c
u
ti
v
e
De
v
e
lo
p
me
n
t
Pro
g
ra
mm
e
o
n
Or
e
M
in
e
ra
l
o
g
y
a
n
d
M
in
in
g
h
e
l
d
a
t
IS
M
Un
ive
rs
it
y
,
Dh
a
n
b
a
d
,
In
d
ia
,
2
0
0
8
.
[3
]
Isla
m
M
.
S.,
e
t
a
l.
,
“
P
e
tro
g
ra
p
h
y
o
f
th
e
Ba
se
m
e
n
t
Co
m
p
lex
o
f
M
a
d
d
h
a
p
a
ra
M
in
in
g
(
P
r
o
d
u
c
ti
o
n
L
e
v
e
l)
Din
a
jp
u
r
District,
Ba
n
g
lad
e
sh
.
”
J
o
u
r
n
a
l
o
f
En
g
i
n
e
e
rin
g
,
Co
m
p
u
ter
s
&
Ap
p
li
e
d
S
c
ien
c
e
s (
J
EC
&
AS
)
,
2
0
1
4
,
V
o
l.
3
,
p
p
.
1
-
9
.
[4
]
M
G
M
CL
re
p
o
rt,
"
In
stru
c
ti
o
n
s
f
o
r
m
in
e
o
p
e
ra
ti
o
n
,
m
a
n
a
g
e
m
e
n
t
a
n
d
m
a
in
ten
a
n
c
e
(u
n
d
e
rg
ro
u
n
d
)
,"
Ko
re
a
S
o
u
t
h
-
S
o
u
th
C
o
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p
e
ra
ti
o
n
C
o
rp
o
ra
ti
o
n
,
2
0
0
5
.
[5
]
“
M
in
e
S
u
rv
e
y
in
g
,
”
Kim Ch
a
e
k
Un
ive
rs
it
y
o
f
T
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c
h
n
o
l
o
g
y
,
1
9
9
6
,
p
p
.
1
-
1
5
0
.
[6
]
NA
M
N
A
M
R
a
h
m
a
n
A
.
,
"
Ge
o
lo
g
y
o
f
M
a
d
d
h
a
p
a
ra
A
r
e
a
,
Din
a
jp
u
r
District.
Ba
n
g
lad
e
sh
,"
Rec
o
r
d
o
f
Ge
o
lo
g
ica
l
S
u
rv
e
y
o
f
B
a
n
g
la
d
e
sh
,
1
9
8
7
,
V
o
l
.
5
,
p
p
.
2
6
1
.
[7
]
Qu
a
ru
z
z
a
m
a
n
C.
,
e
t
a
l
.
,
"
V
e
n
ti
latio
n
sh
a
f
t
c
o
n
stru
c
ti
o
n
b
y
c
o
n
v
e
n
ti
o
n
a
l
f
re
e
z
in
g
m
e
th
o
d
in
M
a
d
d
h
a
p
a
ra
G
ra
n
it
e
M
in
e
,
Ba
n
g
lad
e
sh
,"
IOS
R
J
o
u
rn
a
l
o
f
M
e
c
h
a
n
ica
l
a
n
d
Civil
En
g
i
n
e
e
rin
g
,
2
0
1
2
,
Vo
l.
2
,
p
p
.
7
-
1
3
.
[8
]
Qu
a
ru
z
z
a
m
a
n
C.
,
e
t
a
l
.
,
“
Op
ti
m
u
m
S
u
p
p
o
rt
De
sig
n
f
o
r
Op
e
n
in
g
s
Co
n
sid
e
ri
n
g
In
tac
t
Ro
c
k
m
a
ss
in
P
r
o
d
u
c
ti
o
n
L
e
v
e
l
o
f
M
a
d
d
h
a
p
a
ra
G
ra
n
it
e
M
in
e
,
M
a
d
d
h
a
p
a
ra
,
Din
a
jp
u
r,
Ba
n
g
lad
e
sh
,
”
IOS
R
J
o
u
rn
a
l
o
f
M
e
c
h
a
n
ica
l
a
n
d
C
ivil
En
g
i
n
e
e
rin
g
(
IOS
R
-
J
M
CE)
,
2
0
1
3
,
Vo
l.
4
,
p
p
.
2
6
-
3
5
.
[9
]
Ra
k
h
i
m
o
v
V
.
R.
,
e
t
a
l.
,
"
M
o
n
it
o
rin
g
a
n
d
a
ss
e
ss
m
e
n
t
o
f
sta
b
il
it
y
o
f
th
e
No
rth
e
rn
P
it
w
a
ll
in
th
e
Ka
lma
k
y
r
o
p
e
n
p
it
m
in
e
u
sin
g
su
rv
e
y
in
g
a
n
d
g
e
o
d
e
sy
te
c
h
n
o
lo
g
ies
,
"
Go
rn
y
Z
h
u
r
n
a
l
,
2
0
1
3
,
Vo
l.
7
,
p
p
.
1
8
-
2
2
.
[1
0
]
Zen
g
Z
.,
e
t
a
l.
,
"
Ex
p
e
rim
e
n
tal
m
e
th
o
d
f
o
r
u
n
d
e
rg
ro
u
n
d
h
e
a
d
i
n
g
th
r
o
u
g
h
su
rv
e
y
u
sin
g
n
e
w
tec
h
n
o
lo
g
ies
,
"
J
o
u
rn
a
l
o
f
L
ia
o
n
i
n
g
T
e
c
h
n
ica
l
Un
ive
rs
it
y
,
2
0
1
2
,
V
o
l
.
3
1
,
p
p
.
3
3
1
-
3
3
4
.
B
I
O
G
RAP
H
Y
O
F
AU
T
H
O
R
M
d
.
M
i
n
h
a
j
Ud
d
i
n
M
o
n
ir
is
a
n
A
s
sista
n
t
P
r
o
f
e
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o
r
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t
th
e
De
p
a
rt
m
e
n
t
o
f
P
e
tro
leu
m
a
n
d
M
in
i
n
g
En
g
in
e
e
rin
g
(P
M
E),
F
a
c
u
lt
y
o
f
En
g
in
e
e
rin
g
a
n
d
T
e
c
h
n
o
lo
g
y
,
J
e
s
so
re
Un
iv
e
rsit
y
o
f
S
c
ien
c
e
a
n
d
T
e
c
h
n
o
lo
g
y
,
B
a
n
g
lad
e
sh
sin
c
e
F
e
b
ru
a
ry
0
8
,
2
0
1
4
.
He
jo
i
n
e
d
a
s a Lec
tu
re
r
a
t
th
e
sa
m
e
d
e
p
a
rt
m
e
n
t
o
n
De
c
e
m
b
e
r
1
9
,
2
0
1
0
.
He
a
lso
w
o
rk
e
d
a
s
a
n
In
stru
c
to
r
(M
i
n
in
g
a
n
d
M
i
n
e
S
u
rv
e
y
Tec
h
n
o
lo
g
y
)
a
t
Bo
g
ra
P
o
ly
tec
h
n
ic
In
stit
u
te
u
n
d
e
r
t
h
e
Dire
c
to
ra
te
o
f
Ba
n
g
lad
e
sh
T
e
c
h
n
ica
l
Ed
u
c
a
ti
o
n
f
ro
m
F
e
b
ru
a
ry
0
6
,
2
0
0
6
to
De
c
e
m
b
e
r
1
8
,
2
0
1
0
.
He
is
a
c
ti
v
e
l
y
in
v
o
lv
e
d
in
tea
c
h
in
g
a
n
d
re
se
a
r
c
h
a
c
ti
v
it
ies
a
n
d
h
a
s
se
v
e
ra
l
re
s
e
a
rc
h
p
a
p
e
rs
w
h
ich
h
a
v
e
b
e
e
n
p
u
b
l
ish
e
d
in
j
o
u
r
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a
ls
a
n
d
c
o
n
f
e
re
n
c
e
p
ro
c
e
e
d
in
g
s.
His
re
se
a
rc
h
in
tere
st
in
c
lu
d
e
m
in
e
su
rv
e
y
in
g
;
m
in
e
v
e
n
ti
latio
n
sy
ste
m
;
m
in
in
g
m
e
th
o
d
s;
m
in
e
d
e
v
e
lo
p
m
e
n
t,
o
p
e
ra
ti
o
n
,
p
lan
n
in
g
a
n
d
d
e
s
ig
n
in
g
;
p
e
tro
leu
m
w
e
ll
d
e
sig
n
a
n
d
o
p
e
ra
ti
o
n
;
r
o
c
k
m
e
c
h
a
n
ics
a
n
d
g
e
o
tec
h
n
ica
l
e
n
g
in
e
e
ri
n
g
.
Evaluation Warning : The document was created with Spire.PDF for Python.