http://www.tanb.org/Increasing awareness of tantalum and niobium and their properties, and promoting the use of the metals and their products.Metallurgy
ICRI serves iron foundry members through technology transfer. Offers a technical paper on Grey Iron metallurgy and properties, originally presented in 1969.
The Copper Data Center is a bibliographic database covering the technological and environmental literature on copper, brass and bronze. It is created and maintained by the Copper Development Association Inc.