The Travilah Quarry at 13900 Piney Meetinghouse Road in Rockville is under new ownership as of this morning. Previously owned by Swiss building materials firm Holcim, the quarry is now owned by Amrize. The new U.S. firm was spun off as a separate company comprised of Holcim's North American portfolio. Holcim shareholders approved the spinoff at the firm's 2025 Annual General Meeting last month, and the reorganization officially takes effect today.
Amrize now represents the largest cement business operating within the natural boundaries of North America, and the second-largest supplier of commercial roofing materials, according to Semafor. The company has operations in 43 U.S. states, and employs 7000 people. Its new headquarters is in Chicago.
Blasting, crushing, and screening are among the operations that take place at the Rockville site. Beyond the mining and processing of stone, there are concrete and asphalt plants on-site.
The company utilizes several methods to reduce the impact of the quarry on neighbors, such as locating the primary rock crusher over 20 stories underground, and employing a wet supression system to reduce particulate release at key transfer points in the process. A sitewide pneumatic dust collection system will be fully installed by the end of this year. Two sweepers clean Piney Meetinghouse Road and Shady Grove Road near the facility on a daily basis.
Travilah Quarry is anticipated to continue operations through the 2060s. However, the site is also being studied for repurposing as a water reservoir. Results of a study commissioned by the Interstate Commission on the Potomac Basin released this month indicated the quarry is "suitable for the purposes of raw water storage." Under the concept plan, 17.4 billion gallons of water would be pumped into the quarry from the Potomac River, and then connected to the Washington Aqueduct as a backup supply during algae blooms and other events that impact the supply of clean water.
Images courtesy Amrize
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