As we wait for confirmation of Chromite tonnage by Noront and other JBL players, many like myself are apt to do back of the envelope calculations. As per Snezz's reporting the other day, many major's are very suprised at our reported grades to date. Hence, "call me when you get to 30 - 40 Mt."

Many here are familiar with the term Specific Gravity. For those of you who are not, Specific Gravity is the ratio of the density of a substance (ie. Chromite) to the density of a reference material, generally water. As per the following, Chromite has a Specific Gravity of 4.5 - 4.8.

Category	Mineral
Chemical formula	iron magnesium chromium oxide: (Fe, Mg)Cr2O4
Color	Black to brownish black
Crystal habit	Octahedral rare; massive to granular
Crystal system	Isometric; hexoctahedral
Cleavage	absent
Fracture	Conchoidal
Mohs Scale hardness	5.5
Luster	Submetallic
Refractive index	Subtranslucent to opaque
Streak	Dark brown
Specific gravity	4.5 - 4.8
Fusibility	Infusible
Other Characteristics	Weakly magnetic
Magnesiochromite

So, how much rock mass do we need for 30, 40, 75, 100 Million tonnes?

The answer is simply to divide these rock mass amounts by 4.5.

Therefore for each of the following, we require:

30 Mt - 6.66 Million cubic Metres

40 Mt - 8.88 Million cubic Metres.

75 Mt - 16.66 Million cubic Meters.

etc.

It is easy to get excited about our prospects when we hear that BB1 and BB2 are roughly 1,000 metres apart and Noront is now "moving to test the area between Blackbird One and Blackbird Two in systematic step outs of 100 meters to explore the area to determine continuity of the two zones." (Not to mention the 10 km -10,000 metre potential strike distance including other area plays that has been discussed).

Let's see, 40 Mt requires 8.88 Million cubic metres, divided by a strike length of 1,000 metres...again I say, it is easy to get excited.

Cheers,

Milsy1