The Pitch Lake of Trinidad and Tobago — Watchtower
2020-6-10 · The terms bitumen, asphalt, tar, and pitch are often used interchangeably.However, bitumen is a generic term for a class of dark, heavy hydrocarbon compounds found in tar, pitch, and petroleum.Tar is a dark sticky substance obtained as a condensate from the destructive distillation of materials such as wood, coal, and peat.Further evaporation of tar yields pitch as a semisolid residue.
