  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.
What is the difference between bitumen and coal tar (or tar sands)? Bitumen and coal tar, or tar as it is commonly known, are two very different materials. No. The bitumen that is used on roads, roofs or pavements, for example, is inert and does not present any known health or environmental hazard.