Here are the Small Trommels.
under it. It is powered by a small chain saw engine with plenty of gear reduction to get
the slow 10-20 RPM.
so we dropped back to….
The new Weedeater powered version. The internal gear reduction of this motor eliminated
lots of parts. This cost less to build, improved reliability, has less maintenance, it used the
A51A sluice too.
Weedeater Gas Powered Trommel
To enhance fine gold recovery on this trommel I put a Keene A51 sluice under it. It is much
wider than the A51A and it recovers fines and small nuggets very well. The original 3/8 screen
has a 1/4 inch screen inserted in it for just fine and minus 1/4 in material. Note the metal cover
over the rear sprocket and one over the rear of hopper. This protects the barrel sprocket from
rocks and dirt which can cause lockups it’s a great Safety addition too. These larger Trommels
weigh in at around 90 lbs are 5 ft. long and 3 ft. high. Plans are available.
Battery Powered Trommel
powered water pump. Here is my 8 in bat powered trommel, very quiet in operation, and
it exceeded all my expectations on my field test. It uses a Keene A51A sluice box, here it is
running a recirculating test in the yard for over an hour with no problems. They pulled 10
amps total, trommel 1.5 amps and pump 8.5 amps, the pump is a Rule 2000. This trommel
is 36 inches long and 24 inches high and weighs in at 30 lbs. Plans are available.
unit. This little baby comes in at 23 lbs, and is 26 inches long and 22 in. high. No plans are
offered for this unit.
This is a serious gold getting machine, 6 ft. long, 3.5 ft. high, 3.5 ft. wide and weighs in at 130 lbs.
If you intend to build one this big I hope you have some energetic friends to help you feed
it. It has a huge appetite for material and could work one or two guys pretty hard. Plans
for this big boy are pending a couple of field tests to prove its durability and operation.
Plans are available now.http://prospecting.atspace.com/trommel.html
"Expectations are for future mine production to be limited," one analyst remarks.
"Where I’m focused is to get those costs down, and get the tons up, as Lihir has a lot of potential," Newcrest CEO says...
TCSA is the fifth-largest coal producer in South Africa and the majority of its output is exported to Asian markets such as India and China...
New rules cap deposits for gold retailers, and limit interest rates.
Julian Phillips of the Gold Forecaster sees potential for some gains in the gold price.
The latest progress report on Randgold’s Tongon gold mine in Cote d’Ivoire shows that the operation is making great progress in addressing the technical issues which have caused it to underperform.
Workers at Collahuasi, one of the world's largest copper mines, had called for the temporary work stoppage after one of their colleagues died...
The government issued a stern warning to Gecamines last year against selling the country's assets without its approval...
But BHP declined to comment on whether the trial meant any decision on expanding Olympic Dam would be put off until at least early 2020...