Which commercial bioleaching processes among the following involves piling up of uncrushed waste rock?
(a) In Situ
(b) Dump Leaching
(c) Heap Leaching
(d) Vat Leaching
I got this question during an interview for a job.
Question is from Metal Recovery by Bioleaching Process topic in portion Bioleaching and Biomining for Recovery of Resources of Environmental Biotechnology