| |
Several years ago, my brother
visited from Boston. He was anxious to do some hiking. We decided to do
Boston Basin in the North Cascades.

We parked the car at the
trailhead and headed up the trail. We had hiked for about an hour when
we stumbled upon some derelict mining equipment just sitting there
rusting away. We decided this would be a good place to take a break. We
took our packs off and wandered around looking at all this rusting stuff. Most
of it was cast iron and I shuddered at the thought of the effort taken
to get it there from some place back East. Miners had worked this area a hundred and forty years
ago and had to transport all their gear by whatever means was available.
A few minutes later, we heard a stern voice, "Hey, what are you guys
doing?" We turned to meet Glen Parker, who was there working his claim -
Value Mines, Inc. He was a 1/3 partner and the only one who cared about
mining. He was there with his wife. He offered to show us his mine. It
was pretty fascinating. He said he spent the morning loading rail carts
with rubble from the previous evening's blast. He pushed the carts out
of the mine and over to a crusher that would crush the rock into large
gravel pieces. This gravel was then transported to a shaker table. The
shaker table was about 10' square with ribs attached laterally. At the
end of the table was one end of a connecting rod. The other end was
attached to a wheel about a foot in diameter that was turned by a DC
motor. Picture a single-cylinder engine with the piston attached to the
table. Glen would get a load of gravel on the table and start it up. The
table would move back and forth and with the help of water, the ore
would end up in rows according to its weight. He would come along and
scoop up the top row of gold, then the silver, then the whatever comes
next. He spent the rest of the day drilling holes for sticks of
dynamite, inserting the sticks and exiting. With a twist of his wrist,
he'd declare it Miller time.
The point of this story is that
the lights in the mine and in his cabin and the power needed to run the
crusher and shaker table came from the Pelton wheel.
This Pelton wheel was made of
cast iron in 1898. It was about 3' in diameter and had a circular array
of cups about the size of your hand. Above it was a 6" diameter
vertical pipe
with a nozzle at the bottom. Glen said the pipe was 150' high and was fed
by a creek. He grumbled that he had to go up and unclog it every once in
a while. It worked though. It gave him all the power he needed. This is
a great example of distributed generation. Amory would be impressed.
|