[9] The main products, saprolite and limonite ore, are used by NAC's Japanese, Chinese and Australian customers to produce ferronickel and nickel pig iron (NPI).

[3] NAC's sites were among those under critical inspection of the DENR (Department of Environment and Natural Resources), accused of a range of environmental law violations with uncontrolled siltation and soil erosion, dust emissions cited as the main reasons amongst others.

[10][11] In February 2017, the late Environment Secretary Gina Lopez ordered the closure of the Hinatuan Mine.

[12] Besides the mining business, NAC also has invested in renewable energy and power generation with Emerging Power Inc (established in 2001), (EPI), operating in Subic Bay Freeport, Nauhan, Mindoro Oriental, and Biliran.

Aside from Nickel Asia Corporation, the Zamora family also owns or has interests in the following industries: Security Bank (Banking; purchased from Ronald Gapud in 1986), MANTA Equities Inc (Real estate firm established in 1990), Informatics Philippines (Part of the Informatics Group in Singapore; College established in 1993), Philippine International Air Terminal Co. (Aviation),St Luke’s Medical Center (Healthcare, established in 1903), Zamora and Poblador law (Law firm established in 1993), Cafe Lyon/Dome Cafe (Food and beverage; franchised in 1993) YUKI (Food and beverage; franchised 2019),and Pepper Lunch (Food and beverage; franchised in 2008), Tranzen Group (Holding company established in 2008), MRC Allied (Holding company established in 1990), Philippine Phosphate Fertilizer Corporation, Bacavalley Energy, Inc., One Pacstar Realty Corporation, Two Pactstar Realty Corporation, Agusan Power Corporation, Philphos Trading Inc., Lear Aero Ltd., Inc., Libjo Mining Corporation, and Lake Mainit Hydro Holdings Corporation, and PT&T (Broadband established in 1962) Besides their business ventures, the Zamora family are also active in politics: Mayor Francis Zamora and Congresswoman Ysabel Zamora are currently serving as Mayor and Congresswoman of San Juan city respectively.