CALGARY, AB, Sept. 24, 2025 /CNW/ - Northstar Clean Technologies Inc. (TSXV: ROOF) (OTCQB: ROOOF) ("Northstar" or the "Company") is pleased to announce it successfully separated and recovered ...

We make more concrete than any other material on the planet. A group of engineers across the country want to turn that production process—which accounts for over 7 percent of the world’s annual ...

Mumbai: Gujarat and Rajasthan will auction a total of eight limestone mines through the e-auction route, according to notifications for the sale of tender documents put out by the state governments.

The production process for cement requires grinding and heating limestone in industrial kilns at temperatures as high as 2,800° F. That creates “clinker,” which is the base element of most types of ...