Although some companies already use blowout preventers with two sets of shear rams to increase the odds of successfully cutting drill pipe, the U.S. doesn't require that redundancy now.

Nation & World Well-blowout preventer had numerous problems Originally published May 12, 2010 at 10:05 pm Updated May 13, 2010 at 8:50 am 1 of 2 | ...

Blowout preventer report could bring new designs Blowout preventer report could prompt design changes By TOM FOWLER and JENNIFER A. DLOUHY, HOUSTON CHRONICLE March 24, 2011 ...

Blowout preventer will be replaced By Richard Fausset and Kim Murphy Aug. 20, 2010 12 AM PT ...

The blowout preventer was placed into a metal contraption specifically designed to hold the massive device at 9:16 p.m. CDT Saturday. As it was maneuvered into place, crew members were silent and ...

The blowout preventer was removed from the wellhead, which is 5,000 feet deep in the Gulf of Mexico, at 1:20 p.m. Central time, BP spokesman Daren Beaudo said in an e-mail Thursday.

In response, the three main U.S. blowout preventer manufacturers are developing and selling newly robust shearing rams and other designs to slash through thick pipe connections and debris.

Subsea Well Access and Blowout Preventer System Market 2020-2024: Scope Technavio presents a detailed picture of the market by the way of study, synthesis, and summation of data from multiple sources.

National Blowout Preventer Theory Debated In Oil Spill Inquiry April 5, 20114:00 AM ET Heard on Morning Edition Debbie Elliott ...

It took 29½ hours to lift the 50-foot, 300-ton blowout preventer from a mile beneath the sea to the surface. The five-story high device breached the water's surface at 6:54 p.m. and looked ...