Other products, such as asphalt/coal tar blends, and material containing ceramics are also available, so sealcoating contractors have a variety of options to choose from if the coal tar they ...

By distilling bituminous coal in retorts to obtain gas for illumination, or by burning it in kilns or pits, the residue left behind is called coke, which is simply coal charcoal, and is nearly ...

I brief statement of the geo-Iggieal ^^Mtten til whlib coal, oil, bitumen and kindred hyd^^rboIl/l arc fond. ht. Coal and bitumen are of vegetable origin ; but bitumen is not confined to the ...

If coal tar sealer supply is disrupted, contractors who also apply asphalt emulsion sealer or asphalt/coal tar blends will continue to have material to work with. And if you start the season ...

Although coal jobs are down, the demand is up for both anthracite coal, at 18 percent, and bituminous coal, at 21 percent, according to Duane Feagley, the executive director of the Pennsylvania ...