On an attributable basis we expect to produce 375,000 gold equivalent ounces in 2019 at gold equivalent cash costs of $700 per payable ounce sold based on the mid-points of guidance. Please see "Cautionary Note Regarding Non-GAAP Measures". SSR Mining Inc. is a Canadian-based precious metals producer with three operations, including the Marigold mine in Nevada, U.S., the Seabee Gold Operation in Saskatchewan, Canada and the 75%-owned and operated Puna Operations joint venture in Jujuy, Argentina. Cash costs, which include cost of inventory, treatment and refining costs, provincial royalties, export duties and by-product credits, were $9.94 per payable ounce of silver sold in the first quarter of 2019, a 34% decrease from $15.02 per payable ounce of silver sold in the fourth quarter of 2018. This, combined with payable silver ounces sold well below production due to the required ramp-up in concentrate sales, drove higher per payable ounce sustaining capital costs in the quarter. Processing unit costs were 6% lower in the first quarter due to a 17% reduction in cyanide costs that resulted from the start up of a new leach pad. SSR Mining CDIs will initially trade on the ASX on a deferred settlement basis for approximately four to five trading days, following which SSR Mining CDIs will be issued and trade on a … SSR Mining acquired Seabee on May 31, 2016 as a result of our acquisition of Claude Resources Inc. and filed a technical report in October 2017, which included the results of a Preliminary Economic Assessment evaluating an expansion of Seabee.
General and administrative unit costs were 6% higher in the first quarter of 2019 than in the fourth quarter of 2018 primarily due to lower ore tonnes stacked. Lower unit costs more than offset lower grades processed.
During the quarter, 17.3 million tonnes of material were mined, a 2% increase compared to the fourth quarter of 2018, as we commenced mining the next phase of the Mackay pit, which resulted in shorter haul distances and offset the weather events early in the quarter. Paul Benson, President and CEO said, "The operations continued to deliver with nearly 100,000 gold equivalent ounces produced in the quarter at slightly better all-in sustaining costs.
Does not include exploration or development expenditures of the Chinchillas project. This list is not exhaustive of the factors that may affect any of our forward-looking statements.
The Seabee mill facility produces gold doré bars that are shipped to a third party refinery. Shown on a 100% basis unless otherwise indicated by "attributable", which is shown on a 75% basis.