[0] https://www.science.org/content/article/now-we-know-where-de...

Close enough.

of course not you flemish, it must've been those perfidous walloons, hoor

The Gruesome History of Eating Corpses as Medicine

https://www.smithsonianmag.com/history/the-gruesome-history-...

Likely, but it seems they aren’t 100% sure of that at the Encyclopædia Brittanica. https://www.britannica.com/list/7-surprising-uses-for-mummie...:

“It was claimed by author Mark Twain that mummies had been used as fuel for locomotives. In his 1869 travel book called The Innocents Abroad, Twain describes the first railroad in Egypt. Because of the lack of trees and the price of coal, Twain claims that the Egyptians used mummies instead. He wrote, “[The fuel used] for the locomotive is composed of mummies three thousand years old, purchased by the ton or by the graveyard for that purpose.””

Also, FTA: “we know the British imported mummies and bones from Egypt on an industrial scale”

https://en.wikipedia.org/wiki/Mummy_brown

"In a new book, an international team of historians and archaeologists argues the bones were depleted by industrial-scale grave robbing. The introduction of phosphates for fertilizer and bone char as an ingredient in beet sugar processing at the beginning of the 19th century transformed bones into a hot commodity. Skyrocketing prices prompted raids on mass graves across Europe—and beyond."

    In a new book, an international team of historians and archaeologists argues the bones were depleted by industrial-scale grave robbing. The introduction of phosphates for fertilizer and bone char as an ingredient in beet sugar processing at the beginning of the 19th century transformed bones into a hot commodity. Skyrocketing prices prompted raids on mass graves across Europe—and beyond.

IIRC contemporary documentation, from the 19th Century, related to exploiting bone fields has been shown on UK TV as part of Digging For Britain and other such shows in years past.