13.5 tons of deadly gas released at Texas refinery in October incident

HOUSTON, Texas: Investigations are continuing after two contract workers died when 27,000 pounds (13.5 tons) of deadly hydrogen sulfide gas was released at Pemex's Deer Park, Texas, refinery last month.

The U.S. Chemical Safety Board (CSB) said this week its probe is focusing on the management of maintenance work and emergency response by Mexico's state-owned oil and gas firm.

Repcon had employed the two co