Gram staining. Gram staining or Gram stain, also called Gram's method, is a method of staining used to differentiate bacterial species into two large groups (gram-positive and gram-negative). The name comes from the Danish bacteriologist Hans Christian Gram, who developed the technique.
Horizon Oil Sands. Horizon Oil Sands The Horizon Oil Sands project (or Horizon) is an oil sands mining and upgrading project. Horizon is 100% owned and operated by Canadian Natural Resources Limited.
The entire industry was not âshut down.â The governmentâs action affected only the drilling of new wells. The explosion on the Deepwater Horizon oil rig on April 20, 2010, killed 11 people and resulted in the largest oil spill in U.S. history.