Orocobre Limited provided an update on the brine sampling of diamond drill hole CAU15 in the Cauchari JV property located in Jujuy Province, Argentina. The exploration program is being managed by JV partner Advantage Lithium Corp. (Advantage Lithium) (who hold 50% of Cauchari, earning up to 75%. Orocobre owns 33% of Advantage Lithium's issued capital. Drilling intersected an extensive sequence of sandy material, with coarse sandy gravel units in the last 20 m of the hole. Brine assays from 9 samples at an average sample spacing of 15 m returned an average of 407 mg/l Lithium and 3,196 mg/l Potassium over 132.5 m from a depth of 102 m to the base of sampling at 234.5 m, with the total hole depth 243.5 m. Higher grade brine in the deeper part of the hole averaged 475 mg/l Lithium and 3,662 mg/l Potassium from 174 to 234.5 m. The brine mineralisation shows similarities to CAU16 and CAU07, where higher grade brine is present beneath brackish water and low grade brine that begins at surface. In CAU15 this low grade material extends to a depth of approximately 100 m below surface. Intersection of Li mineralised brine in CAU15 suggests brine mineralisation continues further south. CAU15 is located approximately 6.5 km south of CAU16, for which results were released in November. The brine body defined to date extends some 12.5 km in the N-S direction between CAU07 and CAU15. Diamond core holes CAU07, CAU15 and CAU16 have all intersected relatively permeable sandy sediments that are expected to yield relatively high pumping rates from the NW Sector, which is very positive for future brine extraction. Brine sampling was undertaken systematically at a nominal 12 m vertical interval using bailer sampling equipment, depending on the conditions encountered in the hole. The Mg/Li ratio in all brine samples is low, averaging 3.1:1 across all the samples and 2.9:1 over the higher grade interval from 174-234.5 m. This confirms the suitability of the brine for conventional brine processing, as applied at the nearby Olaroz project. Drill core samples from CAU15 will be sent to an experienced porosity laboratory in the United States, where they will be analysed for drainable porosity characteristics for use in the upcoming resource estimate. Preparations are underway for drilling of diamond holes CAU17 and CAU18 in the NW Sector to supplement holes drilled in 2017 for resource estimation. Initial pumping test results are imminent for hole CAU08, located in the center of the SE Sector, and CAU11, located further to the south. Results will be provided when they become available. Diamond holes CAU12 and CAU13 commenced in December and drilling is continuing following the end of year shutdown period, with the holes expected to be finished around the end of January or early February. This diamond drilling will provide additional information on the distribution of sedimentary units in the SE Sector and will provide samples for laboratory analysis of porosity. Additional information will be provided as it becomes available.