Sigra provides a chain of measurement, analysis and design to deliver engineering solutions

What is Sigra?

Sigra is a privately owned company founded in 1994. It is based in Brisbane, Australia, and operates globally. Sigra is involved in all matters to do with the ground.

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What we do

Sigra delivers solutions to our clients in all matters related to the ground. We understand what we are dealing with, and we have the capability to examine and analyse it in detail.

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Guiding principles

Sigra’s guiding principle is to provide the best solutions possible to its clients. The solution must be feasible, sustainable, appropriate and economically sound.

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Exploration to mine design and operation. Specialising in gas, water and geotechnical aspects. Also covering ventilation and outburst management.

Site investigation specialising in stress measurement, fluid pressure and rock properties. Effective stress-based design specialising in anisotropic, nonlinear rock.

Efficient and accurate exploration methods utilising petroleum reservoir engineering techniques. Design of dewatering for slopes, excavations and underground openings. Deep piezometers.

Stress measurement and rock property determination. Opening and support design, and energy absorbing designs to control rock bursts.

Total exploration programmes to production design of coal seam gas (CBM). Resource and reserve estimates. Gas content measurement for all rocks by coring and open hole gas capture systems.

Design and supervision of exploration/site investigation programmes. Design of directional holes for exploration or production. Manufacture of well control, managed pressure drilling systems and inflatable packers.


  • Sigra South Africa Showcases Innovation at Deep Mining 2019 Conference

    The Sigra South Africa team was able to meet with some of the top experts in the region at the Deep Mining 2019 Conference and South African Rock Engineering Symposium last week.  The conference covered a range of rock engineering and geotechnical challenges facing the industry. It also gave Sigra the opportunity to showcase everything

    July 3, 2019
  • Sigra Celebrates 25 Years of Innovation and Pushing Boundaries

    April marks Sigra’s 25th year of continued operation throughout Australia and across the globe. On April 1st 1994, Dr. Ian Gray founded Sigra as a one-man engineering consultancy. 25 Years on, Dr. Gray continues to lead the company which has grown into a multifaceted, well trusted organisation with offices in Australia and South Africa that

    April 13, 2019
  • Sigra Committing to Servicing Southern Africa

    Sigra is now operating in Southern Africa in the coal, diamond, CSG and petroleum sectors and expects to be involved in large civil engineering projects by early in 2020. Sigra has established Sigra South Africa (Pty) Ltd based in Johannesburg with operations in different industries servicing the Southern Africa region. These developments follow an increasing demand

    March 6, 2019
  • Sigra at Coal 2019 in Woolongong

    Tim Harvey and Tim Gibbons will attend the conference Coal 2019 at the University of Wollongong on Tuesday and Wednesday 18 and 19 February. Directly after lunch on Wednesday Tim Harvey will present the paper ‘Flow Measurement in Gas Drainage’. This will present an improved option to measure gas flows and the use of these

    February 20, 2019

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