Peregrine Diamonds Ltd. PGDIF

Gravity surveys

[xDeBeers]

De Beers seemed to focus on trying to find larger kimberlites this field season, which is pretty much what BHP was doing at the last. De Beers did find 0.5Ha pipes and dikes, which shows the skill of the team. If the big ones are there, the geologists will notice them if they prospect over them. I like that even though PGD purged a few geos since De Beers is running the show, De Beers has taken experienced personel on contract back to Chidliak. Trained eyes for kimberlite float are good. If geologists find kimberlite pieces (float) they follow the trail "up-ice" (in the direction the last glacial event came from) to find the source in-situ.
To find the big kimberlites quickly though, gravity surveys are the best. It's an expensive geophysical technique but the latest press release says it works well. In solid basement (crystalline rocks) the soft kimberlite creates a density low in the earth's gravitational field. This can be detected on the ground or in the air. I think De Beers will JV and the first thing they will do next year is a large expensive airborne gravity (helicopter) survey. The big ones will be revealed then. 
The second thing De Beers will do is get that CAT loader going doing mini-bulk samples of the other kimberlites. In other words NOT CH-6. So tonnage will come from as yet undiscovered kimberlites found from gravity surveys, prospecting, and mini-bulk samples results from all other diamondiferous kimberlites.
One positive of CH-6 being small yet high grade is that stripping ratios and waste rock will be low. Thus mining costs will be low -for an arctic mine.