May 25 (Reuters) - Firefighters contending with a dangerously overheating industrial tank of a hazardous chemical in Southern California have eliminated the possibility of the tank exploding after a crack relieved some of the mounting pressure,

In California, officials say they’ve made major progress on the chemical tank threatening tens of thousands.

The storage tank at GKN Aerospace with about 6,000 to 7,000 gallons (22,713 to 26,498 liters) of methyl methacrylate overheated last week and began leaking vapors into the air around Garden Grove, a c...