In the twenty-first century, 'coke' has a number of meanings and most have been the subject of films. I had to go to Webster's Dictionary to find out that the coke filmed in this movie is the product of coal that is "heated in ovens to remove gasses thus transforming it into coke which burns with intense heat and little smoke and is used as an industrial fuel". Carmeiux is close to Lyon, so Lumiere did not have to go far to document this process.
Review of Carmaux, défournage du coke
