Yes, some mining companies still use FIBC bulk bags.
For instance, MonstaBag recently sold 25 self-standing, frame-less, and reusable debris removal dumpster bags made from woven polypropylene to Cameco, one of the largest uranium mining companies.
These tough FIBC bulk bags are ideal for the mining industry. They are specifically engineered to handle heavy loads and can carry various types of abrasive material over and over again. They are rip resistant and are equipped with an easy to use bottom discharge mechanism that allows for rapid loading and unloading of bag content. You can find additional information about MonstaBag weight, loading capacity, dimensions and pricing at: http://www.monstabag.com