U.S. oil byproduct worsens India's air

Posted: December 2, 2017 at 1:48 a.m.

A worker sweeps up spilled petroleum coke in July at a rail yard in Rampur, India, about 130 miles from New Delhi.

U.S. oil refineries that are unable to sell a dirty fuel waste product at home are exporting vast quantities of it to India instead.

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