I may be wrong.But from what I understand,we are only allowed to bulk sample 1000 tons of ore once, and that,s all until full production.

We now understand that most of the graphene currently produced are practically of very low quality and that is the main reason why we had not seen mass demand for whatever graphene product is out there.The market wants to know:

1 How good is our graphite/graphene.

2 How large a deposit we have .

3 How much,how soon and how long can we supply our product  to ensure uninterrupted world demand . 

Those are all valid questions for potential end users to have before  they can dream of any large scale mass production.

At this stage,we cannot blame them for being skeptical.