Gold Prospecting Equipment Plans - Photographs and Instructions are Terrific for Sufferers of Gold Fever

http://www.blacksandbox.com/rock-crusher.cfm

This particular post does not have a plan. But since a lot of you are interested in rock crushers (especially small ones), I thought this great information should be a first read before you try to conjure up one.
This article covers:

Rock Crushers & Mills

Mortar and Pestle, Dolly or Hand Crusher, Jaw Crusher, GyratoryCrusher, Cone Crusher, Vertical Shaft Impactor, Hammer Mill, Stamp Mill, Ball Mill

In addition, find 20 + more topics on gold prospecting. Listings invlude from water pumps to miner's moss to gold prospecting books to availability of wire cloth. See the British Geological Survey designed hand- powered shaker table.http://www.blacksandbox.com/equipment-plans.cfm

See multi-use sluice here:

http://golddredger.com/cgi-bin/dcforum/dcboard.cgi?az=read_count&om=106&forum=DCForumID9&viewmode=threaded