How to Make a Rock Sled for Dredging
August 2017 by Ron Kliewer
When my “anonymous” friend told me the rock tub was probably a hundred miles from where he safely stashed it, I decided to build another sled and improve on my old design.
The holes were overloaded with explosives, but I didn’t know it. I was just a green mining engineer fresh out of school and told to watch as the experienced miners set the charge.
Historically, Montana has been an important gold producer, in terms of both lodes and placers, and it still produces gold for the prospector today.
We needed something to cook on, so we brought most of our kitchen with us including our full-size oven, which was pretty funny to see in the middle of a rainforest. Food was always a concern, but fortunately for us...
With great relief, the equipment I chose worked well, and after shoving into three days what should have been ten days of set-up and testing, we were up and running.
Depending on the ore and if significant sulfides are present, a hard rock miner may be able to get away with simply using a flux to digest the other minerals that may be present.
While mapping, I also found rock chips in the soil that were characteristic of the same wall rock alteration that occurs adjacent to the known lodes in the greenstone belt.
The favorable geology of the northeastern and central parts of the Seven Troughs Range are the parts most interesting to prospectors. They are underlain by a thick sequence of Tertiary volcanic rocks, mostly rhyolites and andesites.
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