could some one explain why they would choose one over the other?
tweeta_bear Hero Member Jul 5, 2013 657 181 Feb 9, 2014 #1 could some one explain why they would choose one over the other? Amazon Forum Fav 👍 DR.ÖTEK Metal Detector, Waterproof Gold Detector, Pinpoint & Terrain Modes, Professional Metal Detector - Grab it through Amazon!
could some one explain why they would choose one over the other? Amazon Forum Fav 👍 DR.ÖTEK Metal Detector, Waterproof Gold Detector, Pinpoint & Terrain Modes, Professional Metal Detector - Grab it through Amazon!
D dave wiseman Hero Member Jul 23, 2004 829 843 Angels Camp,Ca. Feb 9, 2014 #2 Sinking a shaft,running drifts are inherently more dangerous ..less cost effective,less production in most cases.
Sinking a shaft,running drifts are inherently more dangerous ..less cost effective,less production in most cases.
mtau Jr. Member Mar 21, 2013 88 119 MT Detector(s) used gmt Primary Interest: Prospecting Feb 9, 2014 #3 If there is a large deposit of low grade ore, they generally open pit it. If there is a small vein of high grade ore, they go under ground.
If there is a large deposit of low grade ore, they generally open pit it. If there is a small vein of high grade ore, they go under ground.
G golden ray Full Member Jan 30, 2013 215 90 Nevada Detector(s) used Gold Bug Pro & Lobo Primary Interest: Metal Detecting Feb 14, 2014 #4 The cost of underground mining, the knowledge required, plus MANY more government regulations that go along with it, are some of the reasons open pit mining is (if possible) preferred, by both small & large operators.
The cost of underground mining, the knowledge required, plus MANY more government regulations that go along with it, are some of the reasons open pit mining is (if possible) preferred, by both small & large operators.