How a Mill Works: Hard Rock Mining Tour Boulder County Open Space 5:32 12 years ago 11 037 Скачать Далее
Cardinal Aggregate Quarry & Processing Operation Cardinal Aggregates 3:13 8 years ago 144 369 Скачать Далее
Horseshoe & Willie W. Lodes: Hard Rock Mining Tour Boulder County Open Space 0:46 12 years ago 509 Скачать Далее
Hard Rock Roadheader Mining - Meikle Rodeo Underground Gold Mine rocbolt 2:19 10 years ago 1 223 Скачать Далее
Rocky Mountain Mammoth Mine: Hard Rock Mining Tour Boulder County Open Space 0:39 12 years ago 1 003 Скачать Далее
Underground Hard Rock Mine Tour of Vale Chasm in Sudbury, Ontario, Canada Pierre Repooc Productions 6:56 6 years ago 31 889 Скачать Далее
Unity Mining - Henty Gold Mine - Process Plant - milling Unity Mining 1:26 9 years ago 948 Скачать Далее
Copperland Gold Turbine manual & jackhammer ore crushers, hard rock mining gear Copperland Corporation 8:29 3 years ago 245 Скачать Далее
Underground Mining Equipment and Their Operations Cherry On Top TerraTech 12:58 3 years ago 141 928 Скачать Далее