The following web pages has some information regarding Australian companies, "www.austrade.gov.au/Mining-to-the-Philippines/default.aspx" and "www.dfat.gov.au/geo/philippines/philippines_brief.html".
In particular both web pages say: "Australian companies are leading the charge with the following Australian companies already active in the Philippines: Lafayette, Indophil, Climax-Arimco, QNI/BHP Billiton Minerals and Red 5. Some of the Australian technology suppliers in the Philippines include: Environmental Systems and Services; Slope Indicator and Boart Longyear."
Doing a search of the web, it does appear that there are considerable issues with mining in the Philippines. In particular, the locals tend to get upset about open pit mining.
