Environmental Protection
methods, the researchers developed the Community-led Integrated Non-Mercury
Non-Cyanide Gold Extraction Method (CLINN-GEM), which uses alternative
chemicals that are safe and environmentally friendly. It can also be customized so
that it is better suited to the characteristics of the ore that will be processed,
allowing for a more optimized gold recovery rate.
The project has been deployed in four sites, namely Gumatdang, Benguet; Jose
Panganiban, Camarines Norte; Cabadbaran City, Agusan del Norte; and
Nabunturan, Compostela Valley. Recent field-testing data from these sites show
that CLINN-GEM is better than existing artisanal mining practices in the
Philippines in terms of recovery rate, operational time and cost, and
environmental cost. The technology thus allows mining communities to replace
the current practice of using cyanide and mercury with an option that reduces the
harm to the communities and environment as a whole, allowing for a more
sustainable livelihood.
CLINN-GEM is an off-shoot project of a DOST-PCIEERD research on the
field testing of an integrated gold-copper mineral processing pilot plant. The
primary objective of the project was to investigate the methods for optimum
recovery flotation and extraction technologies, and the application of an
integrated treatment and disposal of tailing materials. The project also aimed to
encourage small-scale mining communities to embrace the technology and
propagate its use and benefits through capacity building and educational
programs; and to formulate operational protocols and recommend policies for the
nationwide implementation of safe and environmentally-friendly integrated gold-
copper processing plants for the Philippine small scale mining industry.
Funded by: DOST-PCIEERD (R&D phase) | DOST-TAPI (Intellectual Property protection)
Patents filed: Philippines
24 | UP Diliman SALIKSIKHAY