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[Tvoivozhd <tvoivozd AT infionline.net>]

Aluminum air battery I probably included in a recent prior post, 
papercrete or large quantity papier mache mixer,plans-list.

http://www.exo.net/~pauld/activities/AlAirBattery/alairbattery.html  
(aluminum air battery---unique in that it actually produces a useful 
amount of current, sufficient to run small electric motor.  It requires 
some activated charcoal, another reason for you producing it as a highly 
profitable home business.)

http://starship-enterprises.net/Papercrete/Mixer/  (a 
pull-behind-your-car-or-pickup truck papercrete mixer---uses a lawnmower 
blade in a tub to do the mixing---might try this for mixing alternate 
hypertufa fibers if peat moss is not available or too expensive---as 
mentioned before, alternate grass, corn leaves, hydrilla, duckweed et. 
al. would first have to be shredded to proper length in a screened 
hammer-mill like an old WW.Grinder, Kemp, or newer McKissic---and be 
dried before shredding.)

http://metalwebnews.com/poorman/energy-money.html  (list of plans for 
simple equipment, cement mixers, how to get emergency gasoline out of a 
closed gas station pump, backyard pottery equipment, candle-powered 
radio, hydraulic ram pump, swivel hoist for your pickup truck, 
windpowered clothes-washing machine)