  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.
Oil and gas producer Petroleo Brasileiro SA (PBR) , also known as Petrobras, saw its price target raised Wednesday by analysts at Credit Suisse. Credit Suisse raised its price target for the the Rio de Janeiro, Brazil-based company to $38, up from a previous target of $35. Petrobras shares closed Tuesday at $41.10. Suisse cited the recent oil price rally, as well as lower domestic gasoline prices as reasons for the upgrade.