Mining in the area around Marvel Loch dates back to the early 1900s and between 1905 and 1986, of gold were recorded as having been mined. From 1979 to 1987, the mine was operated as a joint venture between Kia Ora Gold Corporation NL and Western United Limited, after which it was sold to Mawson Pacific Limited. Mawson Pacific subsequently sold the mine to Reynolds Australia Gold Operations Ltd, a wholly owned subsidiary of Reynolds US Metals. During its period of ownership Reynolds acquired the Southern Cross Mill and adjacent tenements including the Transvaal Underground Mine and the Cornishman Open Pit located approximately north of Marvel Loch. On 1 April 2005 the Marvel Loch Mine together with the Southern Cross Mill and adjacent mines was sold to Sons of Gwalia for $23m. During 1995 and 1996 Sons of Gwalia acquired Orion Gold NL and Gasgoyne Gold Mines NL whom together owned the Yilgarn Star Joint Venture approximately south of Marvel Loch. The Yilgarn Star Joint Venture operated the Yilgarn Star Open Pit and Underground mine and mill as well as the Nevoria Gold Mine. Sons of Gwalia mined the Marvel Loch deposit as a surface mine for the most part of the mine's history since reopening in the 1990s, upgrading its production facility in 2001. In February 2001, the company announced it consolidated its Southern Cross operations, acquiring the remaining 30% of the Yilgarn Star Gold Mine it didn't own and merging the operation with Marvel Loch, closing the Yilgarn Star mill. It also acquired other interests in the region in this transaction. Since then, production from Yilgarn has been listed under Marvel Loch. After a rapid rise of the company, unauthorised gold and foreign exchange trading activities by chief financial officer Eardley Ross-Adjie in the year to June 2000, ended up costing Sons of Gwalia more than A$190 million. Sons of Gwalia went into administration on 30 August 2004, following a financial collapse, with debts exceeding $800 million after suffering from falling gold reserves and hedging losses. Sons of Gwalia was Australia's third-largest gold producer and also controlled more than half the world's production of tantalum. St Barbara purchased the mine from insolvent Sons of Gwalia in March 2005. Since the purchase of the Mine by St Barbara, mining has been carried out both in surface and underground operations. In July 2009, St Barbara suspended open pit mining at Marvel Loch and decided that the treatment plant will be operated on a week-on, week-off basis.
