1. Bernardo-Arugay, I.C.; Echavez, F.J.A.; Aquiatan, R.H.L.; Tabelin, C.B.; Virtudazo, R.V.R.; Resabal, V.J.T.: Development of ceramic tiles from Philippine nickel laterite mine waste by ceramic casting method. Minerals 12(5), 579 (2022). https://doi.org/10.3390/min12050579
2. Board of Investments, Philippines: The Philippines’ Mineral Potential. https://vdocument.in/philippines-mineral-potential-june-2011.html?page=9 (2011). Accessed 23 Feb. 2023
3. Aseniero, J.P.J.; Opiso, E.M.; Banda, M.H.T.; Tabelin, C.B.: Potential utilization of artisanal gold-mine tailings as geopolymeric source material: preliminary investigation. SN Appl. Sci. 1(1), 1–9 (2019). https://doi.org/10.1007/s42452-018-0045-4
4. Senate Economic Planning Office: Realizing the Philippines’ Mining Potential PB-13-02. https://www.academia.edu/27526065/Realizing_the_Philippines_Mining_Potential (2013). Accessed 23 Feb. 2023
5. Philippine Statistics Authority: 2018 Census of Philippine Business and Industry: Mining and Quarrying. https://psa.gov.ph/content/2018-census-philippine-business-and-industry-mining-and-quarrying-0 (2020). Philippine Statistics Authority. Accessed 23 Feb. 2023