The document discusses Environmental Investigation Missions (EIMs) in the Philippines as a participatory and scientific process for investigating the impacts of corporate mining. An EIM involves a multidisciplinary team integrating community knowledge with scientific expertise to examine biophysical, social, economic, and political effects. The methodology includes parameters for water, soil, and socioeconomic testing. EIMs have found pollution issues at nickel, tailings dam, and gold mines affecting water quality, soil contamination, and community health and livelihoods. While EIMs provide accountability, limitations include potential inaccuracies, lack of baseline data, and budget constraints.