Materials

Important Link:  Periodic Table (Learner.org) The periodic table (or, more formally, the periodic table of the elements or periodic table […]

  A Metal is an element that gives up electrons to form cations. They tend to be lustrous,  good conductors

Refining (as in non-metallurgical uses) consists of purifying an impure material, in this case a metal. It is to be

A quarry is a type of open-pit mine from which rock or minerals are extracted. Quarries are generally used for

  Agriculture General Agribusiness · Agricultural science Agronomy · Animal husbandry Extensive farming Factory farming · Free rangeIndustrial agriculture Intensive farming Organic farming ·

Agricultural output in 2005. The primary sector of the economy involves changing natural resources into primary products. Most products from

Simplified world active mining map (click to enlarge) Chuquicamata, Chile, site of the largest circumference and second deepest open pit