Sarissa Resources Inc (SRSR)

[Tom Orrow]

SX-EW (solvent extraction and electrowinning) are distinct metallurgical unit operations that recover high purity metal from leachate solutions. Solvent extraction is used to concentrate materials in an organic solution, while electrowinning is used to recover these pay elements. The two procedures are often conducted together. While electrowinning can be used with other processes, it is always used after solvent extraction.

http://www.sgs.com/en/Mining/Metallurgy-and-Process-Design/Unit-Operations-and-Metallurgical-Services/Solvent-Extraction-and-Electrowinning.aspx

SGS has proven experience recovering a number of elements through SX-EW including:

Gold and silver

Copper (from sulfate and cyanide solutions)

Nickel (including nickel laterite)

Cobalt and zinc

Zirconium and rare earth elements

Manganese and vanadium

Niobium and tantalum