|
DWSN
|
Dawson Geophysical Company
|
US
|
NASDAQ
|
|
GEOS
|
Geospace Technologies Corporation
|
US
|
NASDAQ
|
|
MIND
|
Mitcham Industries, Inc.
|
US
|
NASDAQ
|
|
MINDP
|
Mitcham Industries, Inc. - Series A 9.00% Series A Cumulative Preferred Stock
|
US
|
NASDAQ
|
|
DUG
|
DUG Technology Ltd
|
AU
|
ASX
|
|
FYI
|
FYI Resources Ltd
|
AU
|
ASX
|
|
CGGYY
|
CGG
|
US
|
OTC
|
|
CGPVF
|
CGG
|
US
|
OTC
|
|
FSEI
|
First Seismic Corp
|
US
|
OTC
|
|
IMDXF
|
Imdex Ltd
|
US
|
OTC
|
|
TXLZF
|
Tesla Expl Ltd
|
US
|
OTC
|
|
YZCFF
|
Sinopec Oilfield Service Corporation
|
US
|
OTC
|
|
ORS
|
Orestone Mining Corp.
|
CA
|
TSXV
|
|
ZON
|
Zonte Metals Inc.
|
CA
|
TSXV
|
|
526397
|
Alphageo (India) Limited
|
IN
|
BSE
|
|
1033
|
Sinopec Oilfield Service Corp
|
HK
|
HK
|
|
GDGE
|
CGG SA
|
DE
|
F
|
|
TCNO3
|
Tecnosolo Engenharia S.A
|
BR
|
SA
|
|
TCNO4
|
Tecnosolo Engenharia S.A
|
BR
|
SA
|
|
600871
|
Sinopec Oilfield Service Corp
|
CN
|
SHG
|