This circumstance led to experiments to ascertain the preservative nature of coal tar. More than fifty years ago W. H. Hyett and others impregnated wood with gas tar, and reported that cuch wood ...
Coal is used as an energy source because the compressed carbon in the pressured material burns for significantly longer than other materials like wood. In the 1800s, people began using coal to ...
LITTLE VALLEY — Cattaraugus County officials announced that the Emergency Benefit component of the Heating and Energy Assistance program opened Thursday.