Anyone ever done this?

[jog]

Looking for any info in regards to
how to build or whether or not someone has done this before.
Looking to build a small hopper with a grizzly on it that will overhang a cliff, there will be drain pipe attached to the bottom of the hopper and it has to go about 250 ft to the bottom. Will shovel into it with a shovel, material will drop out into the back of a truck and be hauled to a nearby wash plant.

 

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[DizzyDigger]

You'll need a pretty good sized trailer just to haul that
much pipe (twenty 10' sections of ? sized PVC), not to
mention the challenge of packing it up that slope to assemble
the chute.

Can it be done? I'm sure it can...but if it were me I believe I'd
try to figure another method.

 

[russau]

Im assumeing that you've already tested this ground and its got value ......For myself , it would have to be really good ground for all that work! Ive seen pictures of that type of operation BUT on a lower height. At 250 feet that material will be really traveling when it would hit that bed and dent the snot out of it. ive also seen some construction people using a lightweight plastic tube maybe 24 inch diameter hanging out of windows for multiple story buildings to get their scrape to a dumpster. PVC would be too costly and way to heavy to hang that high and support it.

 

[jog]

250 ft roll of corrugated drain pipe, 4 or 6 inch?

 

[jog]

It will pay, see pic, less than 20 buckets. I can drive right to where I'm going to dig but the problem is going back down with a loaded truck, steep off camber road.

 

[DizzyDigger]

What size will the grizzly be classifying down to?

 

[Hoser John]

Put on new brakes and recheck emergency brakes too. DANGEROUS to say the least as THAT is a fall neither you or your truck will survive. I understand the logic of not shoveling out the truck BUT rental dump trailers readily available for a few bucks a day...jus' sayn'-lotza luck-John

 

[Oddjob]

Well if it is slow and careful that is required on the road then I would get a Muck Truck before I would spend money on some slide.

Muck Trucks come in all sizes, I would just go for something small that can haul about 1.5 yards at a time. I would also search for one sitting on tracks as well. A slide chances are will not be used again: a muck truck can be. New they do not cost that much and used they are really cheap.

 

[wildminer]

I understand steep and offcamber road so that sounds not so good to me. I'm thinking the chute idea is on the right track, maybe with a hopper on the lower end to absorb the impact. What a wonderful problem to solve that you have!

 

[winners58]

maybe you could find some old corrugated roofing, I think standard length is 16' so you would need 16 sheets
.

 

[johnedoe]

It will pay, see pic, less than 20 buckets. I can drive right to where I'm going to dig but the problem is going back down with a loaded truck, steep off camber road.

Since you can drive to the dig site can you set up a dry washer or some sort of processing equipment?
If so run that and transport your cons......... I would rather carry the cons from those 20 buckets than carry the 20 buckets.....

This would also reduce your overhead in hauling material, not to mention the time spent in transporting the material which means driving instead of digging.

 

[1637]

keep us posted,sound like a good place.
brad

 

[mytimetoshine]

Dry washer...

 

[wildminer]

Maybe an overhead high line to lower a container of cons similar to a zip line or the reverse of a high lead logging show? (The picture of that pan has got me screwed up and I need to get back to work!!!)

 

[goldenIrishman]

I've seen it done Jog but there are a lot of variables to consider. The main of these is the size that the grizzly is classifying the materials down to. You're going to want the diameter of your pipe to be AT LEAST 2-1/2 to 3X larger and even then if you feed it to fast you stand the chance of plugging it all up. Of course you know that it will clog up in the most inaccessible part of the setup.

The tin roofing idea that Winners brought up is a good one. Provided that you have a steep enough slope, you don't have to go all the way from top to bottom. Make a ramp from the tin that will get the materials far enough away from the face so they'll clear all the way down and just let gravity do its thing.

 

[OwenT]

I would lean toward the flume or zipline. This is eastern OR I'm assuming? That's some nice gold. So this is a bench deposit 250 ft above the river? Can you tell more about the deposit? I'm interested so I can know how to look for those sorts of things.

 

[jog]

Since you can drive to the dig site can you set up a dry washer or some sort of processing equipment?
If so run that and transport your cons......... I would rather carry the cons from those 20 buckets than carry the 20 buckets.....

This would also reduce your overhead in hauling material, not to mention the time spent in transporting the material which means driving instead of digging.

Have thought about a dry washer but usually to damp just under the service. To many thunderstorms.

 

[jog]

I've seen it done Jog but there are a lot of variables to consider. The main of these is the size that the grizzly is classifying the materials down to. You're going to want the diameter of your pipe to be AT LEAST 2-1/2 to 3X larger and even then if you feed it to fast you stand the chance of plugging it all up. Of course you know that it will clog up in the most inaccessible part of the setup.

The tin roofing idea that Winners brought up is a good one. Provided that you have a steep enough slope, you don't have to go all the way from top to bottom. Make a ramp from the tin that will get the materials far enough away from the face so they'll clear all the way down and just let gravity do its thing.

Was thinking of 4 inch so I wouldn't end up with a lot of splices in my tubing, would like to go six but so far haven't found lengths over 100 ft.
Would probably set the grizzly up for 1 inch or less, would test oversize with MD.

 

[jog]

I would lean toward the flume or zipline. This is eastern OR I'm assuming? That's some nice gold. So this is a bench deposit 250 ft above the river? Can you tell more about the deposit? I'm interested so I can know how to look for those sorts of things.

Yes, it's in Oregon. It's an an old hydraulic mine.

 

[rodoconnor]

In the Panamint Mts , the old timers had zip lines, flumes,ect. on the sides of the cliffs. they would sent ore down that way. How they managed to build some of those things is a testament to their guts and determination. Muy macho.