51.   Biodiesel, made from either soybean oil or recycled vegetable oil, avoids the release of carbon monoxide and small particles that occurs when traditional diesel is burned.

52.   Cleaner diesel trucks and buses can help states meet federal standards for reducing pollutants such as smog and small particles, Environmental Protection Agency Administrator Christie Whitman says.

53.   He said the company takes precautions at the plant because dust and small wood particles in the air could be combustible.

54.   Logs, wood shavings, chips and sawdust are ground into small particles and combined with resin and other substances to create large panels using heat and pressure.

55.   Liquid propellant turns into ice when it encounters the vacuum of space, and the small particles typically do not attach to anything, Stone said.

56.   Logs, wood shavings, chips and sawdust are ground into small particles and combined with resin and other substances to create large panels.

57.   The biggest risk is that their batteries or fuel tanks would explode, creating a cloud of small particles, each of which could be lethal for other satellites.

58.   They would take the material to the edge of the river and try to separate out small particles of gold using wood-frame sieves and pans.

59.   This is because small particles tend to more readily scatter the blue part of the light spectrum, leaving more red to be seen.

60.   They would take the material to the edge of the Cauca River and using wood-framed sieves and pans, try to separate out small particles of gold.