methyl mercaptan
(Updates made 11/26/15 appear in [ ])
The Houston Chronicle’s Lise Olsen and Mark Collette continue their reporting of the November 15 incident at DuPont’s La Porte, TX facility that killed four workers. Wade Baker, 60, Gilbert "Gibby" Tisnado, 48, Robert Tisnado, 39, and Crystle Rae Wise 53, were asphyxiated by a release of methyl mercaptan [related to a faulty valve . A faulty valve may have been part of the problem. Alexandra Berzon at the Wall Street Journal reported the trouble may have started with a blockage in the methyl mercaptan line, and that the operation was not properly vented…