Salt Lake Potash Limited announced successful progress from the Lake Way Site Evaporation Trials (Lake Way SET). The Company is focused on rapidly progressing the development of the Lake Way Project to become the first Sulphate of Potash (SOP) production operation in Australia. A major component of the feasibility study process for the Lake Way Project is to develop a brine evaporation and salt production model based on the brine chemistry of both Lake Way playa and Williamson Pit brines under local environmental (evaporation) conditions. Initially, this model was based on a computer simulation generated by international brine processing experts Ad Infinitum, from known brine chemistry (from assays) and comprehensive public weather datasets. In this case the model was also informed by the Company's unique database of more than 18 months of field evaporation trials at Lake Wells, reflecting similar chemistry and environmental inputs. In the second stage of the model development the computer simulation was calibrated against and updated for the results of wind tunnel evaporation tests of Lake Way brines under laboratory conditions. Thirdly, the model is now being further refined by establishing a site evaporation trial, where a scaled down version of an evaporation pond system is established on site and brine is evaporated under actual field conditions. Both brine chemistry and salt production are closely monitored. The Lake Way SET was established in May/June 2018 and initial brine feed was gradually introduced from both the Williamson Pit (SOP resource grade 25kg/m3) and the Lake Way playa (SOP resource grade 14kg/m3). Over 100,000 litres of Williamson Pit and the Lake Way Playa brine has been fed into the SET pond system to date. Brine is sourced from a surface trench, for the Lake Way Playa brine, or direct from the Williamson Pit and introduced into a Halite Pond. As solar evaporation concentrates the brine, it progresses through a series of 5 ponds: two halite salt ponds, and then schoenite, kainite and carnallite salt ponds. Harvested salt and brine samples are analysed at regular intervals through the evaporation process to gather data for model correlation. To date over 400 samples have been extracted and assayed at Bureau Veritas in Perth. This provides the Company with a very strong basis to continue development of the mass balance model and process flow sheet for the Lake Way Project. It was found that halite salts begin to form almost immediately upon initial evaporation of the Williamson Pit brine. This will shorten the overall salt production timeframe for the Williamson Pit brine. It may also offer the opportunity for faster construction of harvest pond infrastructure, utilising harvested halite salts for pavement. The Lake Way SET has already produced over 2 tonnes of Potassium Harvest Salts (1.8 tonnes Lake Way Playa and 0.4 tonnes of Williamson Pit) and a further 5 tonnes are forecast to be harvested during ongoing evaporation trails. This provides the Company with confidence that the Lake Way production model, process flowsheet and Harvest Salt product will produce a final high grade SOP product in line with the world leading SOP product of 53% K2O produced at Lake Wells.