At least 8 die in fire in Russian oil sludge firm
The fire at a sludge storage has been put out, the ministry said in a statement. The Investigation Committee said the cause of fire could be an explosion, while the state-owned RIA Novosti news agency said, citing a law-enforcement source, the plant caught fire after gas exploded.
The ministry said eight more people were injured after the fire was reported at 0950 Moscow time (6:50 a.m. British time) at the plant, owned by the private Invest-Oil company.
According to some estimates, more than 3 million tonnes of sludge is being generated in Russia as a result of oil and gas production and refining.
(Reporting by Vladimir Soldatkin; editing by James Jukwey)