Advanced Search

The Green Industry's Resource Center

Old 01-01-2013, 03:22 PM
hoeman376's Avatar
hoeman376 hoeman376 is offline
LawnSite Senior Member
Join Date: Feb 2010
Location: Digging holes
Posts: 327
someone please explain
Reply With Quote
Old 01-01-2013, 08:48 PM
Scag48's Avatar
Scag48 Scag48 is offline
LawnSite Fanatic
Join Date: Jul 2000
Location: Marysville, WA
Posts: 6,069
Says it's for open face coal mining however I'd have to argue that. You'd have to wait for trucks just like a front shovel, so unless there was some sort of walking conveyor/stockpile pit that followed the machine around that conveyor loads the trucks, I don't see how it would be more efficient than a front shovel. I could see this as being more of a shaft mining machine but it's pretty large for that. Definitely a unique piece of gear.

Go hard, go fast, or go home
Reply With Quote
Old 01-02-2013, 02:20 AM
alco alco is offline
LawnSite Senior Member
Join Date: Mar 2009
Posts: 255
That's a Rahco surface miner. Basically, it's just like an asphalt milling machine, and pulverizes the material it's being used on, as well as loads it out at the same time. Typically, they are used for thin seams of material, or large flat lying deposits.

It has to stop periodically to exchange trucks under the conveyor, but only really has to pause for a couple seconds while the next truck spots in. In a thin seam, a shovel will have to move too much while loading, and can't easily shave off a thin layer like this machine can.

While the machines are a bit different, here's a video of a surface miner being used on iron ore in Australia. Same general concept, but a slightly different machine design, as the Rahco uses a front mounted cutting drum.

One really nice advantage of a surface miner, is that you don't need a primary crusher. These don't need blasting either, though they aren't made for extremely hard rock.

Basically, they have some applications where they excel, and others where they are not practical.
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Layout Style:

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Grand View Media
All times are GMT -4. The time now is 12:27 PM.

Page generated in 0.06734 seconds with 8 queries