Cat® Underground Hard Rock Mining Vehicles In Action Cat Mining 2:14 8 years ago 202 935 Скачать Далее
Microseismic Monitoring in Hard Rock Mines ISRM Commission on Deep Mining 59:59 2 years ago 1 307 Скачать Далее
164 Surveying and Sampling a Mine Dump With Simple Hand Tools Hard Rock University 17:02 4 years ago 1 161 Скачать Далее
Hard rock gold mining,gold recovery from stone,gold recovery,hard rock gold, GRH channel 15:11 1 year ago 221 065 Скачать Далее
A hardrock underground mining career, in 2 minutes Australian Mining for New Starters 1:41 2 years ago 2 796 Скачать Далее
The abandoned Sayre coal mine #abandonded #underground #mines Underground Birmingham 0:14 3 weeks ago 12 382 Скачать Далее
Hard rock mining, collecting gold ore samples for processing. Dan Hurd 9:46 6 years ago 17 483 Скачать Далее
Exploring & High Grading An Abandoned Underground Hardrock Gold Mine mbmmllc 53:59 1 year ago 227 139 Скачать Далее
How a Mill Works: Hard Rock Mining Tour Boulder County Open Space 5:32 12 years ago 11 096 Скачать Далее