CLARK Development Corp. (CDC) President and CEO Agnes VST Devanadera on June 9 acquired two historic Clark Air Base maps on the Clark Museum, following ceremonies marking the thirty fifth anniversary of the 1991 Mount Pinatubo eruption.

HISTORIC MAPS Department of Science and Technology-Philippine Institute of Volcanology and Seismology Director Mylene Villegas witnesses retired USGS geologist Christopher Newhall flip over historic Clark Air Base maps to CDC President and CEO Agnes VST Devanadera on the Clark Museum, on June 9, 2026. CDC PHOTO
The turnover was witnessed by Department of Science and Technology-Philippine Institute of Volcanology and Seismology (DOST-Phivolcs) Director Mylene Villegas.
The maps had been donated by retired U.S. Geological Survey (USGS) geologist Christopher “Chris” Newhall, who labored with Phivolcs scientists through the eruption.
The handover got here after the revealing of a commemorative marker at Clark Air Base.
Data cited through the occasion, together with in remarks by former President Gloria Macapagal Arroyo, confirmed that joint USGS-Phivolcs studies on Pinatubo’s eruptive historical past and hazards guided the evacuation of greater than 250,000 individuals, with estimates that over 20,000 lives had been saved.
Dating again to 1989 and earlier, the maps are added to the Clark Museum’s assortment, preserving the historical past of the previous US air base and the scientific collaboration well known as a benchmark in volcanic catastrophe response.