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12bmucker
07:33:09 Wed
Aug 18 2010

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Hardrock Mining

Hi Guys,

I am new to the forum. I am excited about someday living and mining in Alaska. I am an underground hardrock miner originally from Colorado. I have worked at large and small mines in Colorado, Nevada, California, Montana, and Western Australia.
Currently I am in the Military but I will be out in a year and I am really excited about mining again. Are any of you guys doing any hardrock mining? I would be interested in buying, leasing, or joint venturing a small mine. I am looking for a property with narrow veins or pockets of highgrade ore. I still own most of the equipment to do a small operation (Mucker, jackleg and stoper drills, 600 cfm compressor, slushers, and a lot of misc stuff like hoses, pipe, pumps, fans, steel, and bits). I would also be able to get my hands on a diamond drill and a 1 yd LHD.
I have no milling equipment but I have thought about buying a small bulk sample mill from www.smallscaleminingequipment.com It looks like it would work good for bulk sampling and maybe even running production on a small operation but I would eventfully want to build something bigger for actual mining.
I am looking forward to being part of this forum and learning more about Alaska.

Tampíer Light


  
Jim_Alaska
13:58:17 Wed
Aug 18 2010

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Re: Hardrock Mining

Hey Mucker, welcome to the forum. I hope you enjoy your time here and even get to add valuable information as you go along. We can always use experianced miners that have good things to contribute as far as information and even as a possible team player.

We have lots of placer miners on the forum,but could use more hardrock guys. I am no longer in Alaska, but Northern California.

I had never done any hardrock, only placer and suction dredging. But just this winter and spring was fortunate enough to be able to do some hardrock for a friend. He has a nice setup, Large generator, large excavator, cat, loader, ball mill, impact mill, dump truck and crushers and good gold. I was able to gain some valuable experience, even though it was not from the owner.

He is very enthusiastic, but a bit short on the actual workings of a mine, especially the recovery part. I do real well at recovery, so just had to learn everything that gets it to that point.

Again, welcome to the forum, have fun.



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Jim (Alaska)
Administrator
Jim Foley's Alaska
jfoley@sisqtel.net
 
 
kringle_mining
05:21:02 Thu
Aug 19 2010

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Re: Hardrock Mining

Would you be interested in a permafrost placer mine? Depth to pay gravels 30-60 feet. will require blasting and tunneling.
Are you bring your equipment up to Alaska?

  
mspain
14:03:43 Thu
Aug 19 2010

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Re: Hardrock Mining

Send a note threw P.M.
:welcome:



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Lady
 
 
kringle_mining
15:03:38 Thu
Aug 19 2010

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Re: Hardrock Mining

Michelle this is definitely the kind of equipment your looking for.

  
mspain
15:42:37 Thu
Aug 19 2010

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Re: Hardrock Mining

Thanks Bill.Look forward to speaking with him.



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Lady
 
 
12bmucker
07:09:36 Sat
Aug 21 2010

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Re: Hardrock Mining

Kringle_mining,

I have never done any permafrost mining. I will read up on it. I am enjoying reading all the mining talk on the forum.

Mucker

  
centennial
08:45:14 Sat
Aug 21 2010

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Re: Hardrock Mining

G Day Mucker
Ive got a 12B, its about 50 years old, it started life at Radium Hill in South Australia mining ore for the British atomic tests at Maralinga, it then went to Broken Hill silver lead and zinc mine and now its giving good service at the Centennial Gold mine, I love it.
Cheers
http://www.youtube.com/watch?v=ieTbcao53r0

  
popandsonminers
17:22:06 Sat
Aug 21 2010

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Re: Hardrock Mining

Mucker,

Thanks for posting and welcome to the forum. Hard rock threads are kinda rare, but I think you'll meet up with someone who can use your talents and tools.

We have a Rock Hog 6" jaw crusher/roller from www.smallscaleminingequipment.com for bulk sampling for Owners that want more resolution on recoverability than they get from an assay or lab analysis. Here's a thread on 49er Mike's on small scale crushing/processing with this mill and a shaker table.

http://www.49ermike.com/dc/dcboard.php?az=show_topic&forum=181&topic_id=88452&mesg_id=88452&page=2

The bottom line for us is the Rock Hog will serve our needs for larger sampling, but I don't think will hold up to continuous, day in, day out production processing.

Any hard rockers have an update? How's the mspain operation progressing? Or rollingthunder? Laurie? Jim Foley? Who else? More pictures? It's been very quiet!


  
mspain
17:30:23 Sat
Aug 21 2010

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Re: Hardrock Mining

Will have more time to get caught this winter.



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Lady
 
 
Manicminer
18:04:24 Sat
Aug 21 2010

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Re: Hardrock Mining

Welcome 12bmucker. I have done some hardrock mining and milling/gravity recovery. If things continue to get tight in the next few years, then small scale mining is the way forwards.

  
12bmucker
20:15:47 Sat
Aug 21 2010

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Re: Hardrock Mining

Hey Centennial,

That is a cool video. Those 12bís will run forever and they are so much fun to operate. It looks like you have a nice operation going. I enjoy rail mining a lot more than using rubber tire equipment. Where in Australia is your mine? In 2001 I worked for AVKO mining in Kalgoorlie driving ladder raises.


  
12bmucker
20:53:22 Sat
Aug 21 2010

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Re: Hardrock Mining

Hey Popandsonminers,

Do you guys find that the Rock Hog will crush the ore fine enough to table without further grinding in an impact or small ball mill? The more I look at the mini mill set up, I think that I would rather just get the Rock Hog crusher and use a different table. My friend is using the RP-4 table from Global Mining Solutions and he really likes it. He even likes it better than his Gemini table. It also looks like having the table on the trailer isnít that stable. Every table that I have seen that wasnít bolted down to a solid foundation just hasnít worked right.

Another table that I have been looking at is the UHF table. Anybody have any experience with these tables?

  
centennial
04:03:55 Sun
Aug 22 2010

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Re: Hardrock Mining

Hi Mucker
Were on the east coast about 300km nth of Sydney, Im getting set up to do some underground diamond drilling using a Diamec 251. Just finishing excavating a drill cuddy and overhauling drill and power pack, should be drilling before Xmas. Ill post some pictures and video soon.

  
Manicminer
07:51:39 Sun
Aug 22 2010

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Re: Hardrock Mining

Quote: 12bmucker at 20:53:22 Sat Aug 21 2010

Every table that I have seen that wasnít bolted down to a solid foundation just hasnít worked right.


Too true. It takes very little movement to mess up the recovery

  
centennial
08:31:38 Sun
Aug 22 2010

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Re: Hardrock Mining

Hey Mucker you might like this
http://www.youtube.com/watch?v=HzkHoYQ0tDU

  
popandsonminers
17:39:49 Sun
Aug 22 2010

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Re: Hardrock Mining

Mucker,

Weíve run a sampling of our quartz ore thru the Rock Hog. On the first pass, about 1/3 is minus 30 mesh. By re-running the +30, about 3/4 of the total is Ė30. Weíre expecting 600-800 lbs per hour if fed continuously, less if you need smaller than 30 mesh.

We developed our own 4'x6' "PopandSon" shaker table for fine, hard rock gold recovery. Has a rubber top with grooves instead of riffles, so the flat surface between the grooves acts as a slick plate of sorts. It's still in the proof-of-design stage, but we're routinely getting -300 mesh gold by crushing to -30 mesh. The gold all settles out in the top 6" of grooves. The table also makes a nice clean cut between the white quartz and the heavy black concentrates, some of which are sulfides. We still need to determine the optimum liberation size for our ore.

The table is mounted on the trailer and is subject to the shaking caused by the crusher, which is something we are working hard to eliminate, or at least minimize. We've run it anchored to the shop floor and also on the trailer, and don't see much difference.

I'd also like to see a variety of shaker tables in action to learn the nuances of how they operate. Anywhere, in an area from BC to Idaho to N. California, so if anyone has one working and are open to guests, please let me know.
[1 edits; Last edit by popandsonminers at 17:40:44 Sun Aug 22 2010]

  
Au_Seeker
17:52:36 Sun
Aug 22 2010

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Re: Hardrock Mining

I really like this video because it's getting younger people involved in the old ways of mining!!

We need the young people on board in mining they are the future!!

http://www.youtube.com/watch?v=xxDo8KvPqJk&feature=related


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