Sentences with phrase «copper ore grades»
hydro is a major methane source, wind turbines use 100 X more copper than fossils offshore turbines use 1000 X more copper 2010 copper ore grades were 30 lbs / ton of rock 2016 coppor ore grads were 3 lbs / ton of rock solar and wind products last 30 years tops 100 % energy transitions take 70 minimum solar and wind break down 2X faster than we can tranistion Stefan Rahmstorf says our emissions must go down 100 % in 20 years to stay under 2 C.
https://www.ecoshock.org/ Not exact matches
In its day, the mine was one of the richest in the British Empire, with about 500,000 tonnes of polymetallic ore extracted annually from the Volcanogenic Massive Sulphide or «VMS» style deposit in the 1920s and 1930s at spectacular grades of 23 % lead, 14 % zinc, 1 % copper and 540 g / t silver.
«Declining ore grades for copper, continued lack of investment in new mines and the time required to bring new discoveries to production will constrain metal availability and, ultimately, the metal sector's ability to meet growing demand from automakers for battery electric vehicle production,» Carol Cowan, a Moody's Senior Vice President wrote.