I wonder if the bucket liners have even been sold in quantity to the mines yet. Big companies like to cover their arses and do extensive testing before making a company wide change, even if the science is solid. Once all the signatures are on paper and OH&S paperwork all update etc, then Newgen would see significant uptake.
What I would like to know is will Newgen by taking the rest of their graphene on the anniversary of the first sale and paying the remaining balance to FGR?