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Gold Prospecting
Hard Rock Gold Prospecting
HARD ROCK MINING on a tight budget: (1)
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<blockquote data-quote="HeadsUp" data-source="post: 87328" data-attributes="member: 414"><p>i encountered black quartz on a tunnelling job in brisbane</p><p></p><p>It would wear out tungsten rock saw blades in 2 months that last 5 years on every other rock type imaginable</p><p></p><p>Diamond saws were getting as poor as 80 metres per set of diamonds @ $ 9000 per set until a supplier got some especially made for us and those gave around 900 metres in black quartz and 3000 metres cutting life in sandstone , concrete and volcanic ignimbrite.</p><p></p><p>black quartz i rate enemy number #1 , followed by some grades of granite and red jasper :/</p></blockquote><p></p>
[QUOTE="HeadsUp, post: 87328, member: 414"] i encountered black quartz on a tunnelling job in brisbane It would wear out tungsten rock saw blades in 2 months that last 5 years on every other rock type imaginable Diamond saws were getting as poor as 80 metres per set of diamonds @ $ 9000 per set until a supplier got some especially made for us and those gave around 900 metres in black quartz and 3000 metres cutting life in sandstone , concrete and volcanic ignimbrite. black quartz i rate enemy number #1 , followed by some grades of granite and red jasper :/ [/QUOTE]
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Gold Prospecting
Hard Rock Gold Prospecting
HARD ROCK MINING on a tight budget: (1)
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