Mining

The North Star Mining Museum is located in Grass Valley California. I found it when attending an engine show there this year. The items in the museum demonstrate that once upon a time the 'merikans were masters of their domain. There are some interesting engineering achievements located there which I have not seen anywhere else in the world ranging from a simple but amazingly effective variation on the simple water wheel (the Pelton Wheel) to a rotary stamp battery. I found the museum to be very interesting and my kids especially liked the curator who is eager to explain everything to the munchkins and very knowledgeable about the mining and the local area. He has made some of the models in the museum which demonstrate the various concepts. Well worth a visit. Admission is by dontation (suggested $2 per person at the door).

nsmm_car_winch_and_unloader

Car winch and unloader

nsmm_compressors

Air compressors to provide air for tools

nsmm_donkey_engine_winch

Donkey engine

nsmm_dynamite_machine

Dynamite machine

nsmm_nozzle

Water nozzle for sluice mining

nsmm_pelton_wheel

Pelton wheel uses high velocity water to efficiently run machines at high speeds

nsmm_rotary_stamp_battery

Rotary stamp battery

nsmm_stamp_battery

More familiar horizontal stamp battery

nsmm_stamp_battery_2

Working stamp battery - the noise when this thing is running is amazing