HONOLULU (KHON2) — As one of three operational quarries on Oahu, the Makakilo Quarry has provided Hawaii with stone, asphalt, and other construction materials for decades. Now the owners of the quarry ...

The roughly 200-acre hillside quarry in Makakilo owned by Grace Pacific LLC now has a permit to operate until 2047. Community members have raised concerns about what the excavated hillside would look ...

Komatsu Smart Quarry Autonomous, powered by Pronto, aims to transform quarry operations with autonomous haulage SAN FRANCISCO, August 07, 2025--(BUSINESS WIRE)--Komatsu, a global leader in mining and ...

Grace Pacific LLC seeks to expand operations in the roughly 200-acre Makakilo Quarry, shown Aug. 14, and extend the quarry’s 2032 closure date by 15 years. Some area residents are raising concerns ...