Starting a new mine

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This should be an interesting thread to follow.
Not much feature visible in the ground yet, what depth have you bottomed on?

In 1983, a Calweld drill shaft was $2.50/foot, bet you wish it was still that price.
Costly enough in those days though.
Mike
 
Mike I bottom at about 46 feet the drill is about $25 a foot now this hole he would have made nothing out of the three or 4 foot of silcrete was about the hardest Ive ever seen It broke his drive chain which are about 1000 bucks each split his radiator and cracked both sides of his ring gear so not a happy driller.
 
rodney said:
Mike I bottom at about 46 feet the drill is about $25 a foot now this hole he would have made nothing out of the three or 4 foot of silcrete was about the hardest Ive ever seen It broke his drive chain which are about 1000 bucks each split his radiator and cracked both sides of his ring gear so not a happy driller.

Tough town to be a driller when you have heat like that and rock that hard.

Its also the abrasive index that affects drilling costs as well as the hardness.

Do you know what the cerchar index rating is for the silcrete?
 
Thanks Rodney, going to enjoy following your progress with that mine.

Actually, plenty of things have gone up x10 since 1983 so the shaft cost is not so unreasonable. Bugger though when you have to wreck the gear to get through silcrete.
Don't suppose you could have cracked it with a few small shots?
Had a bit of experience with silcrete in SW. Qld. opal mining. Nitropril the only economical way to deal with it, but its a fair bit different when you have to collar a shaft

Mike
 
Mike Blowing it would have been great But if they catch us with explosives these days they throw away the key I dont think there is anyone left on the field with a license they put the cost up so high know one can afford to keep it The last time I had a bloke do it cost me $300 a shot
 
Looks promising something you can follow..How are you digging, are you using electric jack picks or air..whats better do you have a preferred type. Cheers
 
Gemo I am using electric jackhammers at the moment I am just using the redback brand from Bunnings they go alright and are cheap. Air hammers are good I just find electric a bit easier I normally don't do a lot of hammering just to bell out and make a big enough space to be able to assemble the digger but I won't be able to use the digger here for awhile. Normally we put a second hole down and ream it out to 46 inches that's how much I need to fit the digger down but the ground here is so hard I haven't been able to con a driller in to doing it yet.
 
Rodney.
When we mined at the 9 mile in the '80's we picked up on a fault line which extended from a nearby claim.
Got some good colour out of it, was actually one side of a palaeo channel according to the fossil wood debris in it.
Any chance you can do similar, depends on the field of course.

Looks like you have potential there with the potch lines, worth pushing on.
Our original show at the Pony Fence was pretty shallow, only about 20ft. but some top stone came out of there.
We eventually just ran out of ground.
Mike
 
Mike not exactly sure what the channel is yet it was all burnt looking ground with a lot of powdery black ash. The colour I drilled was a couple of metres away from where I think the channel was this ground is nothing like the 9 mile or pony fence some very nice stones came out of both those fields I hope you got your share.
 

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