hard mass. FAILURE OF COAL TAB OIL FOR THE PRESERVATION OF WOOD. The causes of the failure are explained by the fact that coal tar does not yield any creosote, even if treated in like manner as ...

"Coal tar is a little more forgiving ... and it will help it last longer. We really hammer hard to our contractors that they need to use the right sand and the right amount of sand to get the ...

These colors, for there are many of them, have been prepared from the alkalies of coal tar by Messr3. W. Perkins and A. H. Church, two rising discoverers, and have been called by them nitroso ...

WHILST the original discovery of a coal-tar dye was made by an Englishman, W. H. Perkin, in 1856, and the early industrial development of the dyestuff industry took place in Great Britain ...

THE Midlands State University (MSU) has produced coal tar needed for the rehabilitation of the country’s dilapidated road network. This emerged at the Zimbabwe International Trade Fair whereVice ...