Cheap gold mines

We sold all our original TLS to the SF. With the cash, I bought the FML SPP and PXG. I also sold my MCO which I don't think will rise spectacularly anymore to buy OYM

http://www.minesite.com/nc/minews/singlenews/article/by-the-end-of-this-year-olympus-pacific-will-have-two-mines-and-two-process-plants-in-vietnam-and/1.html

http://imagesignal.comsec.com.au/asxdata/20110412/pdf/01170371.pdf

When I saw how cheap the EV/OzAu is, I rushed in to buy them. One of them has gold in the ground at under $20/oz. Can you do simple arithmetic? OYM will be producing gold this month but it has a chequered history.