Greenland Energy says billions of barrels of crude could lie beneath territory and claims it has permission to bring drilling kit ashore – a claim denied by Nuuk

On 10 June, a snowy-haired American in his 60s addressed the residents of a remote Greenland hamlet. He was there to tell them about a business venture supported by figures linked to Donald Trump. “So,” Robert Price said via an interpreter, “we have a project to drill for oil here.”

The Texas oil company that Price represents, Greenland Energy, hopes to prove that billions of barrels of crude lie underground by bringing in 300 shipping containers of drilling kit.

The oil giant’s sponsorship deal with Fifa has featured prominently at matches in Houston. But 100 miles away in another Texas city, residents say the firm’s refinery is exposing them to poisonous gases and long-term health problems

The street is wide, its grass verges thick and scruffy after a week of rainstorms. Jamal Johnson will walk home straight down the middle carrying his plastic shopping bag, a jot of motion through the stillness. He lives in one of the modest wood-panelled houses spaced out on each side, most lovingly kept and passed through at least two generations. There is nobody else in sight, but a freight train breaks the silence, grinding left to right along the line flanking the north-facing gardens. The west side of Port Arthur, Texas, could be any lower-income neighbourhood in the southern states if it were not for the looming menace on the other side of the track.

This is a sad, unsettling place. “I’ve got a load of friends and family who’ve had weird diseases,” says Johnson, his face contorting at the thought. He lists a grandfather and aunt who died of cancer, the latter at a young age after relocating here to care for other relatives. An uncle died with complications from ALS (motor neurone disease). “You know what I’m saying? Man, they’ve let off all these poisonous gases; it’s like that all the time. It’s fucked up.”