Barro Group General Manger.

As promised I write to keep you up to date on our Mount Cotton Quarry Extension Project.

Over the last couple of weeks there has been some media focus which has prompted a few questions to us about the project, its expected output, our site location and project impacts.

The following aims to address those latest claims.

No Increase to Quarry Output:

The Mount Cotton Quarry Extension project seeks no increase in the maximum permitted output than is currently allowable or has been allowable in the past. The project is about extending the life of an existing business that has been operating for over 50 years.

The Mount Cotton Quarry Extension project does not seek to create a “Super Quarry” and will just have one quarter of the permitted output of the Karreman Quarry.

The project will have a life of up to 50 years and over that time will supply about 45 million tonnes of quarry materials, the majority being supplied to the community’s needs in Redland City and Logan City.

Based on population predictions extrapolated from Queensland Treasury and Trade data, over this 50 year period the communities of Redlands and Logan will require 350 million tonnes of quarry materials.

The Area:

The project area is one of the most sparsely populated areas in Redland City.

The land owned by Barro Group is over 600 acres and the direct neighbouring properties range in size from 10 acres to over 50 acres. The land area covered by the Barro land and that of the direct neighbours covers about 7 square kilometres.

There are five houses closer than half a kilometre and three houses about half a kilometre from the proposed 50 year quarry extraction footprint.

The quarry extraction footprint will grow slowly, but even in 50 years time, in 2064, the quarry footprint only takes up 28% of the total Barro landholding with the remaining 430 acres being dedicated for conservation purposes.


Quarrying in Mount Cotton and surrounding areas has been an established common occurrence and dates back to the 1950’s. Extraction has occurred at dozens of sites for a range of road making materials, sand, gravels and clay. There were also a couple of gold mines in the southern Daisy Hill area, the first commencing in 1934. Today only two quarries of any scale operate in the Mount Cotton area which are the Barro quarry and the Karreman quarry.

The southern ridgeline rising towards Mount Cotton was quarried in a few locations in the 1960’s as the ridge gravels were easy to win and produced good quality roads. One of these locations is the position of the existing Mount Cotton crushing plant which will be the future location for the new enclosed final crushing and screening plant and the stockpiling area.

The design of the quarry and the processing plant has been configured such that any impacts on our neighbours will be well managed and within all the prescribed guidelines. The natural contours of the site also provide natural buffers.


arro Group respects its direct neighbours some of whom have been so for over 20 years and a number of our neighbours are supportive of the quarry extension project. The economic credentials of the project are impressive and include over $30 million immediate investment in the processing plant and equipment, 50 full time jobs, and over $400 million to be spent in the local community over the life of the project.

Add to this the environmental benefits proposed by Barro which include 430 acres of their freehold land being dedicated for conservation purposes and in particular enhancement of Koala habitat, over 50,000 new trees to be established. This is a very well balanced project.

The Minister through his Department has access to a range of internal and external experts to assist with the current assessment process.  We expect a decision from the Minister on or by 22 November. Over the next few weeks, the community may have further questions about the project and they are free to contact me directly for assistance.

Yours Sincerely

Ian Ridoutt
General Manager.