If memory serves me correct, this has been somewhat of an ongoing ambiguous subject with no clear answer. At times EFL has insinuated they use an environmentally friendly process, but as you know, "the shrimp" on Stockhouse kept claiming they didn't, and couldn't. Only way to be sure anymore is to email Raj or IR and see if you can get a straight answer.
In the meantime, we need more news to get this train rolling.