REFERNCES

The Making, Shaping and Treating of Steel, 8th Edition. 1964. United States Steel.

Pittsburgh East , Pennsylvania Quadrangle, Unites States Geological Survey, 1993.

ASTER: Advanced Spaceborne Thermal Emission and Reflection Radiometer
http://speclib.jpl.nasa.gov/scripts/lib/asp/RockResp.asp

The Slag Garden Website http://slaggarden.cfa.cmu.edu