On Thursday of last week, an avalanche derailed a Quebec North Shore and Labrador Railway freight train owned by Iron Ore of Canada as it made its way north along the banks of the Moisie River.

Divers recovered the body of Enrick Gagnon, the train’s engineer,  just this morning. The train’s lead locomotive is still completely submerged in the Moisie and another is partly submerged. Each locomotive holds about 17,000 litres of diesel fuel, and a 20 kilometer slick — “a silvery layer” — has spread over surface of the Moisie. The train was not hauling ore; its freight compartments were empty for its northbound run.

The Moisie and its watershed are part of a designated aquatic reserve, so the river is technically protected from mining activity; but so far as I can tell, the 16 mile stretch that the Quebec North Shore and Labrador Railway line runs along the Moisie was built in 1954, when mining first began in the region, and more than fifty years before the Quebec government published its conservation plan.

One stated aim of that plan is to protect native species, including and perhaps especially the Atlantic salmon running in the Moisie. As nearly every report on the Moisie catastrophe notes, the pristine waters of the remote northern river are internationally renowned for salmon fishing.

For the Innu of Uashat mak Mani-utenam, whose traditional territory the Moisie crosses, the river is much more: it is, in the words of one newswire report, a thing of “inestimable cultural value.”  So development in Innu territory continues to risk the inestimable for the merely estimable: in this case iron ore, jobs, growth. The Innu, who call themselves “the true owners of the land,” say they never consented to the tradeoff, and that the mining operation in their territory violates “international law, particularly the principle of ‘free, prior and informed consent.’”

Now, with this trainwreck, the Innu have an environmental crisis on their hands; but over the past couple of decades, the Innu say, they have also witnessed a gradual and “cumulative” effect on the environment and their community due to “the intensification of industrial activities” in the Sept-Îles region.

Iron Ore of Canada has a lock on the region’s economy, and development opportunities in the Labrador Trough are, in the words of IOC’s CEO Zoe Yujnovich, “potentially unconstrained.” Rio Tinto, which owns the majority stake in IOC, recently increased annual production capacity for the region from 18 to 23 million tons of ore concentrate, and plans to open a new mine called Wabush 3 to help meet that goal.

A 2013 publication touting Rio Tinto’s “Sustainable Development” plan for the region notes that the additional revenue generated by IOC’s “wholly owned rail company” will keep pace with growth: “use of the railway is set to increase significantly in the next few years as a result of our own expansion projects and junior mining startups in the area.” In other words, more trains than ever will be traveling along the Moisie, from Labrador to Sept-Îles Junction.