The blast occurred around 6:45 a.m. local time at Chevron
Appalachia's Lanco 7H well in Dunkard Township, about 50 miles
south of Pittsburgh.
"One employee of a contractor is currently unaccounted for and
another contractor employee was taken to the hospital for minor
injuries and has since been released," Chevron spokesman Kent
Robertson said in an email.
The Lanco well pad has three natural gas wells. Nineteen workers
were on the well pad during the explosion, Robertson said,
adding a fire continued to burn.
"At the time of the incident, preparations were being made to
run tubing, which is often done prior to bringing wells into
production," Robertson said.
There was no drilling or hydraulic fracturing at the time, he
said.
Robertson said the company did not immediately know the cause of
the explosion. Wild Well Control, an organization trained
specifically to deal with natural gas explosions, was on site,
he said.
"Chevron's primary concern at this point is to contain the fire
and ensure the safety of its employees, contractors and the
surrounding community," Robertson said.
(Writing by Ian Simpson and Eric M. Johnson;
editing by Edward
McAllister and Chizu Nomiyama)
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