Landmark Stone Pty Ltd was approached by David West (Executive Director, Architectural Conservation, International Conservation Services of Sydney) to investigate re-opening one of the three Waikerie Limestone quarries in the Riverland of South Australia, because matching stone was required to restore the facade of the Savings Bank of South Australia head office building at 97 King William Street, Adelaide, which was built of Murray Bridge limestone in 1937. The D'Onise limestone quarry was re-opened in December 2004, after a site appraisal and an investigation of recorded information regarding the quality of the stone found there had been undertaken, and 24 tonnes of grey-white limestone blocks were extracted for this purpose. No further mining occurred until early in 2008, when more stone was removed from this quarry to supply material for building the Sacristy adjacent to Saint Francis Xavier Catholic Cathedral in Wakefield Street, Adelaide, and also for building the foundations and plinth of the commemorative Mary McKillop statue that is to be placed on the western side of this cathedral. The mined dimension stone bed represents the upper portion of the Pliocene Norwest Bend Formation, which varies in lithofacies from a calcareous sandstone at Ramco to a limestone at the three Waikerie quarries, which is sandy in places and has fossiliferous and cross-bedded zones. The thickness of these strata varies from 2.3 m at D'Onise quarry to 4.8 m at both Blake's quarry and Toolunka quarry, compared with 3.8 m at Ramco quarry. At D'Onise, the yellow, fossil-rich friable lower portion of the unit is exposed in a small pit below the quarry floor. Overburden consists mainly of sandy clays with some weakly-cemented, coarse sandy bands up to 0.5 m thick, that belong to the early Pleistocene Blanchetown Clay. A thin veneer of Holocene soil and/or aeolian sand covers the surface. During earlier investigations of the Waikerie limestone quarries carried out by SADME in June 1985 (cf. RB 87/77 by D.C. Scott et al.), eight selected representative samples were taken for bulk chemical analysis and for determination of their density, porosity, water absorption, compressive strength, modulus of rupture and salt crystallization soundness. Data returned from these analyses is re-presented herein. In 2005, the results of the previous SADME mapping and surveying of D'Onise open cut were updated by Landmark Stone with the aid of a stadia theodilite, and a Mining and Rehabilitation Program was compiled and approved as ADP 2004/009 on 22 November 2004, to permit the mining of the aforesaid 24 tonne stone parcel from a newly issued Mining Lease 6164 covering 1.8 ha at D'Onise. Calculations done then suggest that an indicated resource of 8400 cubic m (~ 16,800 tonnes) of dimension stone exists on this lease. Plans to re-open the partly backfilled Blakes quarry were subsequently shelved after market surveys made in Beijing and Xiamin, China in March 2007 by Destiny Stone Australia revealed little overseas interest in Waikerie limestone products.