DOE - Fossil Energy: Clean Coal Technology
Feb 12, 2013 ... The Clean Coal Technology Program began in 1985 when the United ... to test new methods developed by scientists to make coal burning much cleaner. ... One of the ways this is done is by simply crushing the coal into small...
Practical Primitive | Skill of the Month: Improvised Charcoal Water Filter
... supply of charcoal, create a camp fire and when you have a good coal bed, ... Crush your charcoal into small bits, from powder up to the size of aquarium gravel. ... Never take chances and always use the absolute best filtration methods