4:24
leading genuine Diamond Drilling Consumables supplier of China, #coring, #exploration, #FL90D RIG
MVM-999
Shared 8 years ago
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2:06
Coring for geotechnical samples. #coring #drilling #geotechnical #geotech #geotechnical_engineering
Innercore Geoconsultants Services
Shared 2 years ago
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