Briquetting

http://chestofbooks.com/crafts/machinery/Shop-Practice-V1/Pretreatment-Of-Ores.html

http://www.saimm.co.za/Conferences/WorldGold2009/145-150_Li.pdf

http://www.econ.tohoku.ac.jp/~kawabata/Omurapro/omuraCDM/symp_jc/11xu.pdf

http://alchemytech.co.uk/

http://www.womp-int.com/story/2012vol09/story026.htm