An oilfield infrastructure company wants to use deep-well injection to sequester billions of barrels of oil sands mine water in underground reservoirs.

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This story was produced in partnership with the Pulitzer Center. It is part one of a four-part series. Jose Gonzalez* wore no mask, despite the toxic chemicals he worked with in the oil field.

During fracking, liquid is pumped into the ground at a high pressure to create holes, or fractures, that release oil. The sand helps keep the holes open as water, oil and gas flow through it.

A more than 40-mile long conveyor belt filled with sand stretches from the oil fields of West Texas to New Mexico, all for the purpose of one mission: oil production.

Texas leads the United States in oil and gas production, including producing 43% of the nation’s crude oil and 27% of its ...

During fracking, liquid is pumped into the ground at a high pressure to create holes, or fractures, that release oil. The sand helps keep the holes open as water, oil and gas flow through it. Moving ...

Russia’s “shadow fleet” of aging oil tankers helps fund the ongoing war but puts the region at risk of more environmental ...