GEM Quarries
QUARRYING EXCELLENCE FOR 50 YEARS
Quarries
GEM has been involved in quarrying, contract mining and land care management for more than 50 years throughout South-East, South Australia and Western Victoria, with principal sites at Telfords (SA) and Martes (SA). GEM operates a total of 16 quarries, 2 bluestone quarries, 5 sand pits and 9 other quarries that specialise in type A fill and limestone.
All on-site products conform to rigid specifications monitored before, during and after construction under NATA fully independent accredited procedures.
At all times, we work harmoniously with all parties to negate and minimise noise and particle emissions from our quarry operations, and apply land care solutions and revegetation programs whenever the need arises in all operations.
TELFORDS QUARRY
HIGH-PURITY LIMESTONE FROM THE LIMESTONE COAST
Telfords Quarry is one of GEM Group’s principal South Australian quarry operations, supplying limestone products for civil construction, road building and agricultural applications throughout the region. As part of GEM’s broader quarry network, Telfords provides an important local source of road-making rubble and agricultural lime, backed by the group’s extensive experience in quarrying, material production and transport.
A key product from Telfords is its high-quality agricultural limestone. Recent product testing records a calcium carbonate (CaCO₃) content of 95.6%, demonstrating the naturally high purity of the limestone sourced from the quarry. Calcium carbonate is the active component of agricultural lime used to neutralise soil acidity, making product quality and consistency important considerations for agricultural applications.
GEM Group combines the quarry resource with its own crushing, testing, transport and operational capability, allowing materials from Telfords to support projects and customers across the Limestone Coast and surrounding regions. Quarry products are produced to specification and supported by GEM’s established quality and materials-testing processes.