http://hotcopper.com.au/threads/flake-vs-high-purity-graphite-debate.2357568/#.VGq_Nr5EcX5

In particular

1) RPA Inc. expects to release a Preliminary Economic Assessment (‘PEA’) in the later half of the 4th quarter

Could be any day now!

2) We believe our material can compete with the high purity synthetic graphite and none of our recent pilot plant results or metallurgical testing suggests otherwise.

We have the best graphite and know how to process it

3) we expect to use a combination of strategic investors, off-take agreements, project level investment and debt facilities

Absolutely no indication of a cheap PP

4) The Albany deposit can be processed, at a cost advantage, to yield high purity, crystalline graphite ideally suited for advanced high-tech applications.

See comment for point 2 above

Do your own DD, but ZEN is on track and on target and the patient investor will profit massively, IMO