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 ...

The well-known archaeological site of Anahita Temple at Kangavar is one of the most important Iranian stone monuments. It has been dated by various authors in an interval extended from Achaemenid to ...

Cement production alone currently accounts for about 8 percent of global CO 2 emissions, so considerable effort is going into lowering that number. Efficiency can be increased, and energy sources can ...

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 ...

Cement production accounts for 4.4% of global greenhouse gas emissions by releasing carbon dioxide from limestone and using an energy-intensive process. Decarbonization technologies, including ...

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.