  Crushed stone, for example, has a density of 100 pounds per cubic foot (lb/ft3), which is 1600 kilograms per cubic meter (kg/m3), which is 1.6 metric tons per cubic meter. Packed earth is about 95 lb/ft3, or 1520 kg/m3.
Harvard Business Review. Harvard Business Review. The Harvard Business Review (HBR) is a general management magazine published by Harvard Business Publishing, a wholly owned subsidiary of Harvard University. It is published 6 times a year and is headquartered in Brighton, Massachusetts.
PBR. abbreviation for pabst blue ribbon beer, which is simultaneously the best and worst beer ever brewed. it is typically on special at bars for twelve cents a pint. also doubles as a laxative. dude, i'm gonna have such bad PBR shits tomorrow.bbreviation for pabst blue ribbon beer, which is simultaneously the best and worst beer ever brewed. it is typically on special at bars for twelve cents a pint. also doubles as a laxative.