As promised, I've opened up access to my data file for all to use. You may download the raw data spreadsheet: HERE
It is free to use and amend.
Following feedback received, another 3 companies have been included, company data has been updated, and two columns added: NAV and NAV per share. NAV is probably better defined as in situ resource value in this instance. (cu at $US 4.00 per lb)
Here is the final 'Adequate only' version:
A pictorial cash cost comparison for 16 of the 22 producers / advanced explorers follows: