Australian mines · quarries · supply · historySource review: 24 August 2026Data & source notes
Mines & QuarriesTHE AUSTRALIAN WORKING REGISTER
Quarry · Victoria

Colac Otway extractive authority WA007635

Current work authority BasaltHard rock & aggregate

Colac Otway extractive authority WA007635 is a current extractive work-authority record for basalt and hard rock & aggregate in Colac Otway, Victoria, Australia. It is recorded at approximately -38.248, 143.618 (positional accuracy: reference point derived from the authority polygon, not a surveyed quarry entrance), and appears in this directory's consolidated register of Australian mines and quarries, built from government geological-survey data.

The Victorian register records a current extractive work authority for this place. A current authority permits extraction subject to its approvals and conditions; it does not, by itself, prove that quarrying is occurring on the review date.

The source record identifies work authority WA007635, the material category “Basalt New” and Colac Otway. The map point is a directory reference derived from the authority polygon, not a surveyed quarry entrance.

Additional recorded details — the recorded operator is Holcim (Australia) Pty Ltd; recorded mining start: 2025-09-05.

Victoria's geology and operations are documented in depth by the Geological Survey of Victoria; the sources for this page are listed below.

Spotted an error, or can you complete this record? Suggest a correction.

At a glance

Common questions

Is Colac Otway extractive authority WA007635 still operating?

The Victorian register records a current extractive work authority. That legal status does not, on its own, confirm production or site activity on the review date.

What does Colac Otway extractive authority WA007635 produce?

The recorded commodities are Basalt and Hard rock & aggregate.

Where is Colac Otway extractive authority WA007635?

In the Colac Otway local government area of Victoria. The displayed coordinate is a reference point derived from the public authority polygon, not a surveyed entrance or access point.

Who operates Colac Otway extractive authority WA007635?

The recorded operator is Holcim (Australia) Pty Ltd.

Related sites in Victoria

The contribution desk

Know something this report is missing about Colac Otway?

Send a source-backed correction, material or geology lead, event, current-site evidence, photograph or family record. We preserve the evidence level and credit you—or keep you anonymous—after human review.

Contribute evidence

Sources for this page

Record last rebuilt from source data: .

StatusCurrent work authority
TypeQuarry
CommoditiesBasalt, Hard rock & aggregate
StateVictoria
LocalityColac Otway
Coordinates-38.2479, 143.6182 (reference point derived from the authority polygon, not a surveyed quarry entrance)
Work authorityWA007635
Source materialBasalt New
Authority polygon40.91 ha
Regulatory regionSouth West
OperatorHolcim (Australia) Pty Ltd
Mining start2025-09-05
MapOpen reference point ↗