The HVACR industry has rightfully pursued and embraced HFC refrigerants with lower global warming potential (GWP). Transitions to R-410A and R-404A were accomplished over time, requiring significant ...

Halfway across the country, another project also chose copper, but for entirely different reasons. The Cathedral of St. John the Divine, located at 112 th St. and Amsterdam Avenue in Manhattan, had ...

We've heard a lot of talk about critical minerals recently. These are the metals and elements crucially important to the ...

UNS C72700 copper alloy has a copper content of not less than 84.8%. The following table shows the mechanical properties of UNS C72700 flat products as a function of heat treatment and thickness.

It is believed that copper has been mined for over 5000 years. It can be found in elemental form and in the minerals cuprite, malachite, azurite, chalcopyrite and bornite. Copper is also often found ...

Ivanhoe Electric Inc. is recommended a "Hold" rating. The company is involved in exploration activities and studies primarily on copper properties in US. The company's stock is highly correlated with ...

Copper nitride thin films have emerged as a highly promising material platform, combining the advantages of low-toxicity and room temperature stability with the versatility of tunable electronic and ...

Copper bottles, lauded by Ayurveda for health benefits, pose risks if overused. Excessive copper intake can lead to toxicity, ...

Copper, ancient of metals (its tin-alloy, bronze, having given its name to the prehistoric Bronze Age), opened the year 1929 in a flourishing, a prosperous condition. The price of copper last week ...

Special to The New York Times. TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print ...