Gold costs were about $317 per troy ounce in 2007, but these can vary widely depending on mining type and ore quality; global mine production amounted to 2,471.1 tonnes. After initial production, gold is often subsequently refined industrially by the Wohlwill process which is based on electrolysis or by the Miller process, that is chlorination in the melt. The Wohlwill process results in higher purity, but is more complex and is only applied in small-scale installations. Other methods of assaying and purifying smaller amounts of gold include parting and inquartation as well as cupellation, or refining methods based on the dissolution
Social peer-to-peer processes network model allows for a more fluid organization that does not fix any group in a permanent adversarial position. Various temporary coalitions are created on an ad hoc basis depending on the issues. The following is a list of individuals who have made contributions to the peer-to-peer paradigm. MIT Press, 2004 (power as embedded in the digital protocols governing networked systems) Social peer-to-peer processes Social peer-to-peer processes are interactions with a peer-to-peer dynamic. These peers can be humans or computers. Peer-to-peer (P2P) is a term that originated from the popular concept of the P2P distributed computer application architecture which partitions