Arena Minerals Inc. announced that the Board of Sal de la Puna Holdings Ltd. has approved a comprehensive development work program for the Sal de la Puna Project. Sal de la Puna Holdings owns 100% interest in the Sal de la Puna Project ("SDLP") in the Pastos Grandes Basin located in Salta, Argentina, and is jointly owned by Arena (65%) and Ganfeng New Energy Technology Development (Suzhou) Co. Ltd. (35%). The approved work program focuses on expanding the recently announced maiden lithium brine resource estimate and advancing processing studies in order to establish an optimal route for the production of high purity lithium products. Highlights of the approved work program include: Drilling to focus on resource upgrade and expansion; Minimum 3,000 metres of diamond drilling; 2 large diameter production wells; Drilling covering 6 claims within Pastos Grandes basin; Pilot plant and pond construction; Engineering studies to optimize process routes to produce >30% lithium chloride products. The work program is fully permitted and is set to commence immediately. The drill program will be focused on the Almafuerte and Graciela blocks which border Millennial Lithium's Pastos Grandes project to the south and south-east. A map showing the proposed locations of the drill holes and wells. The program has been designed by the Management Committee, Arena and consultants to the Company with the objective of both increasing the category of the current resource and increasing the Project's resource base. To date, resources have only been defined on the Almafuerte block covering approximately 6.5% of the total landholdings of the Company in the Pastos Grandes basin. Additional drill holes and a production well are planned within the Alamfuerte claim to increase the resource category and conduct long term pump tests to evaluate production potential of the lithium bearing aquifers. If successful, this drilling will allow the Company to graduate portions of the resource to Measured and/or Indicated categories and conduct preliminary wellfield designs, including predicted production capacities. Priority resource expansion drilling will focus on the Graciela block, located less than one kilometre north of the Almafuerte block. Graciela lies immediately adjacent to established lithium bearing aquifers drilled by other operators in the basin. Favourable geophysics suggest these brine bodies continue onto the Graciela block. Brine is also interpreted to occur in the Patovica I, Barreal II and southern end of the La Relojera properties, as determined by proximity to known brine bodies and favourable geophysics. TEM lines across these properties indicate the presence of brines at depth, within a well-established lithium bearing basin. Exploration drilling is planned for these properties, more than doubling the drilled area.