Decreasing Metal Ore Grades

  title={Decreasing Metal Ore Grades},
  author={James West},
  journal={Journal of Industrial Ecology},
  • J. West
  • Published 1 April 2011
  • Geology
  • Journal of Industrial Ecology
This massive decrease in copper ore grades was not driven by depletion of higher grade deposits with resulting higher copper prices. It was instead a direct result of innovation that converted massive supplies of previously worthless "waste" rock into valuable ore. 

Decreasing Metal Ore Grades—Is the Fear of Resource Depletion Justified?

Metals are an essential part of modern living. Ensuring the future supply of metals is a key issue in politics, science, and economics because the available amount of mineral resources is limited. To

Integrated underground mining and pre-concentration systems; a critical review of technical concepts and developments

ABSTRACT The mining industry is increasingly facing lower feed grades, which is resulting in the necessity to reduce mining and processing costs. One of the most renowned approaches to increasing

On the Sustainability and Progress of Energy Neutral Mineral Processing

A number of primary ores such as phosphate rock, gold-, copper- and rare earth ores contain considerable amounts of accompanying uranium and other critical materials. Energy neutral mineral

Mineral grades: an important indicator for environmental impact of mineral exploitation

We have collected and analysed grade information for nine metals: copper, gold, iron, lead, manganese, nickel, PGM, tin, and zinc. Based on this analysis, we have developed a proposal of “grade

Environmental impacts of key metals' supply and low‐carbon technologies are likely to decrease in the future

The environmental benefits of low‐carbon technologies, such as photovoltaic modules, have been under debate because their large‐scale deployment will require a drastic increase in metal production.

Driving Productivity by Increasing Feed Quality Through Application of Innovative Grade Engineering® Technologies

The minerals industry is facing a productivity and investment crisis. The ‘Millennium Super Cycle’ from 2003-11 was an unprecedented period of growth and investment resulting in increased throughput



Will Sustainability Constraints Cause 'Peak Minerals' ?

The mining of apparently finite mineral resources is almost unanimously considered as ‘unsustainable’ ‐ yet the scale of modern mineral production is vast and continues to grow exponentially,

Hollowed Ground: Copper Mining and Community Building on Lake Superior, 1840s-1990s

This title details a century and a half of copper mining along Upper Michigan's Keweenaw Peninsula, from the arrival of the first incorporated mines in the 1840s until the closing of the last mine in

Master spreadsheets compiling Australian mining production data

  • Melbourne, Australia: Department of Civil Engineering, Monash University and Mineral Policy Institute.
  • 2007

To move A mountain: Railroads and mining in Utah’s Bingham Canyon early copper era, 1900–1914

  • bingham/bingham-1900-1914.php. Accessed 15 November 2010.
  • 2010

To move A mountain: Railroads and mining in Utah's Bingham Canyon early copper era