Creation + Diwalwal assignment
- 9 Apr: OP Memorandum authorized incorporation of NRMDC under DENR
- 4 Jul: SEC incorporation; NRDC 55% / PNOC 45%; 9-member Board
- 18 Nov: DENR–NRDC–NRMDC MOA transferred Diwalwal operations/assets/records to NRMDC
Portfolio expansion + capitalization + cancellation of non-performing tenements
- 27 Apr: DENR–NRMDC MOA transferred Dinagat Island tenements to NRMDC/PMDC
- 1 Feb: DENR MO No. 2005-03 — cancellation process for 93 non-performing mining permits
- 9 Jun: OP Memorandum increased authorized capital to ₱125M; NDC entered; Board expanded to 11
- 5 Aug: DENR MO No. 2005-13 declared cancellation of 65 tenements final and executory
PMDC portfolio transfer + institutional repositioning
- 2006: PNOC-EDC stake transferred to PNOC due to IPO
- 30 Mar 2007: NRMDC renamed Philippine Mining Development Corporation
- May 2007: DENR MO No. 2007-05 transferred cancelled non-performing tenements to PMDC
- 2007 E.O.s: E.O. 636 transferred PMDC to OP; E.O. 665 gave Chairman Cabinet rank; E.O. 689 transferred PMDC back to DENR
Current Diwalwal governance
- 4 Jul: E.O. No. 88 reconstituted and strengthened the National Task Force Diwalwal; NTFD empowered to inventory, evaluate, oversee and monitor DMRA activities, including PMDC-managed tenements