The solution mining of trona has long been touted as an attractive alternative to underground mechanical mining. However, numerous early efforts to solution mine virgin trona seams met with only limited success, and mechanical mining took the forefront, where it remains today. One company in the Green River Basin of Wyoming conducted an extensive series of field tests in the decade of the 1980＇s. Several operators are currently practicing a form of solution mining whereby a previously mined region is flooded, creating an underground sump, and the brine is pumped to the surface for processing. This review will discuss fundamental aspects of trona solution mining and progress that has been made since the idea was first proposed. Various alternatives for selecting solvent compositions and operating conditions will be explored. Processes for recovering alkali values from the product brines will be described, as will the means by which integration of processing steps with the solution-mine operation can be accomplished.