RE: ZEN versu NGC?... you can start with that article
https://www.reuters.com/article/2013/03/04/mining-pdac-zenyatta-idUSL1N0BU2CS20130304?feedType=RSS&feedName=technologySector&rpc=43
here's a quote from the article:
Zenyatta says it is unique in that its project is the largest, and only new, vein-type graphite deposit in the world.
"If there's 100 companies out there with graphite projects right now, 99 of them have flake and there's one with hydro-thermal or vein type," said Eveleigh.
Than there is the money in the bank that ZEN have that will keep the share structure really tight
There is a lot more to add to that which i suggest you take time to read some of the post from december until today. Chief post are really good and really acurate. if you start readding the post from december, you will also notice an increase of basher that try to bash ZEN, they have been wrong since the beggining so you can etheir read it and make your personnel opinion or save time and concentrate on the answer from Chief
Good Luck