  200 shells per â¦ carton. 600 cigarettes per pound so 16 ounces divided into that is .03 ounces per cigarette or 6 ounces per carton. so 0.6 ounces per pack so the shell weighing .4 to .5 ounces makes sense I guess. Metric scale to .001 ounce needed.
Bitumen is also frequently called tar or pitchâthough, properly speaking, tar is a byproduct of the carbonization of coal and pitch is actually obtained from the distillation of coal tar. Bitumen is defined by the U.S. Geological Survey as an extra-heavy oil with an API gravity less than 10Â° and a viscosity greater than 10,000 centipoise.
A wonderful source on bitumen is the paper by Krishnan and Rajagopal cited below, which has an extensive summary of bitumen used throughout history, and a long discussion about the mechanical properties and locations of the material throughout the world, as well as a 500+ entry bibliography on the subject.he earliest reed boat discovered yet was coated with bitumen, at the site of H3 at As-Sabiyah, about 5000 BC. And, one of the myths of the Mesopotamian Sargon the Great of Akkad was that as an infant he floated in a bitumen-coated reed basket down the Euphrates River.