Behind the scenes, however, another big industry also had stakes in the standoff: Big Oil. Coal companies, chemical companies, and oil and gas backed rail majors in lobbying Congress to block the workers’ strike.

In early November, the American Chemistry Council, which counts BP, ExxonMobil, and Chevron among its members, put out a report warning that a rail strike could “pull $160 billion out of the economy” and lead to 700,000 job losses. Then last week, 400 business groups sent a letter to Congress urging lawmakers to use their authority from a 1926 law to impose the controversial, rejected contract in the absence of a voluntary agreement. In addition to retailers, agriculturists, and car manufacturers, signatories included the American Petroleum Institute, a trade group for drillers, the National Mining Association, and the Renewable Fuels Association, representing ethanol. All of these industries rely on freight rail to make and ship their products.

In the end, rail companies and fossil fuel interests were joined by President Joe Biden, who urged Congress to avert the strike over fears of economic breakdown.

Research from 2019 showed how, over the past 30 years, BNSF Railway, Norfork Southern, Union Pacific, and CSX, the four largest rail companies in the U.S., joined other coal-dependent companies such as electric utilities in pouring tens of millions of dollars into denying climate science and opposing climate policy.

“It shows that the rail companies were actually funding more climate denialism organizations than even the oil industry,” said Justin Mikulka, a research fellow at the energy transition think tank New Consensus who formerly covered the rail industry as a journalist. “Coal has been such a huge part of rail – it was in their interest to deny that coal was part of the problem.”

Beyond writing letters to block the most recent strike, oil and gas companies have a history of collaborating with the rail industry to avoid freight regulation. In 2013, after a series of high-profile oil train explosions, regulatory agencies spent years trying to implement oil-by-train safety policies, including speed limits for trains, improved braking systems, and requirements to condition oil to make it safer to put in tank cars. “At every meeting by one of the regulatory agencies, the person at the head of the table was someone from the American Petroleum Institute [or API],” said Mikulka, who wrote a book about how freight and oil companies blocked regulations in the years after a runaway train filled with crude oil derailed in Quebec, exploding and killing 47 people.