9:52 475 The Preliminary Test of the Flash Roaster Prototype Went Very Well Hard Rock University 244 views - 1 week ago
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8:06 463 Does Zinc Wire Work Better Than Copper to Test Solutions for Gold Hard Rock University 261 views - 3 months ago
9:56 462 A DIFFERENT Field Test for Gold In Eco-Goldex Solution Hard Rock University 270 views - 4 months ago
13:55 461 Some Interesting Things from the Second Run of the New Stripping System Hard Rock University 342 views - 4 months ago
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5:40 447 Doing A Little Shopping at ACTION MINING- Plains, MT Hard Rock University 322 views - 6 months ago
5:43 443 Bottle Rolls, Spot Tests, and Electrowinning Part 4 Hard Rock University 140 views - 6 months ago
10:40 442 Bottle Rolls, Spot Tests, and Electrowinning, Part 3 Hard Rock University 145 views - 6 months ago
10:00 441 Bottle Rolls, Spot Tests, and Electrowinning, Part 2 Hard Rock University 207 views - 6 months ago
6:09 440 Bottle Rolls, Spot Tests, and Electrowinning, Part 1 Hard Rock University 129 views - 6 months ago
13:00 438 Countercurrent Decantation: Separating Dissolved Gold from the Solids WITHOUT FILTERING! Hard Rock University 488 views - 7 months ago
28:45 436 Testing the Bejeebers out of Central American Concentrates Hard Rock University 219 views - 7 months ago
30:28 433 Torture Testing Some of Prospector Tripp's New Inventions Hard Rock University 403 views - 8 months ago
15:48 430 A Day Hiking, Bushwacking, and Hanging from a Rope Hard Rock University 291 views - 8 months ago
19:39 426 Checking Our Claim Stakes and Some Great Views Hard Rock University 340 views - 10 months ago