Probably 50% to 100% of float is nss to cover. I suggest looking at vol jump from June 19 to July 3. Then add that up. Compare to avg vol since and you can see how big short is.
Coal, I don't speculate, but I can tell you that I own almost two million shares and if my math is correct that would be ten percent of the public float. Now we know why this number was not given out previously. Trader
News 
Market Data 
Discover 
