The Atlas Materials Process for nickelNickel, magnesiumMagnesium, and cobalt recoveryCobalt recovery from saproliteSaprolite ores began developmentDevelopment in 2021 at SGS Lakefield, originally conceived as a study investigating the amenability of hydrochloric acidHydrochloric acid treatment for a variety of magnesiumMagnesium/silica enriched feedstocks (including asbestos tailingsTailings, olivineOlivine sand, and saproliteSaprolite). The investigation eventually grew to include testingTesting designed to generate separate magnesiumMagnesium, nickelNickel/cobaltCobalt, and Supplemental Cementitious MaterialSupplemental Cementitious Material (SCM) (SCM, to replace fly ash in the productionProductions of cement) products, in a process with nominally zero solid wastes. This paper will provide an overview of the testingTesting that was conducted at SGS Lakefield, from bench scale testingTesting to the more than twelve pilot plant campaigns operated within a span of three years. Specific attention will be given to the improvements to the process made over time as the flowsheetFlowsheet evolved based on the findings of the investigation. This includes the application of non-traditional alkaline reagents for impurity removalImpurity removal, confirmation of the process using a variety of potential feedstocks, and evaluation of different downstream process configurations and reagents to provide flexibility within the unit operations and final products.