I found this presentation by Agnico Eagle quite good to get an introduction into the development of the different cost measures (Presentation from May 2013). http://www.denvergold.org/assets/downloads/luncheons/DGG May 6 2013.pdf
There is a detailed description of the calculation of AISC on the WGC site, as they have developed this instrument. I do not have the link available at the moment.
Cheers
R1
MML Price at posting:
83.0¢ Sentiment: Buy Disclosure: Held