Deep Soil Mixing Ltd (DSM) was set up in 2012 by Robert McGall and Colin Critchlow to further expand the use of soil mixing and soil stabilisation as ground improvement techniques in the construction industry. With over 75 years combined experience in ground engineering and construction we have significantly broader experience in applying soil mixing and soil stabilisation techniques than the other main ground engineering firms.

Because we concentrate uniquely on deep soil mixing and soil stabilisation, we are able to offer very personalised services and our directors work directly with our clients.

In the past, soil mixing has sometimes been overlooked in cases when ground conditions were considered too problematic, but since 2012, we’ve come up with some remarkable advances in the technology to overcome these problems. We are becoming renowned for successfully undertaking challenging and difficult projects that others may not wish to do and we can demonstrate the impact this is making in the world of civil engineering and illustrate how new soil mixing techniques can transform severely contaminated or poor quality land into commercially viable land that can be developed.

Quality is at the heart of everything we do and Deep Soil Mixing Ltd hold ISO 9001 and 14001

ROBERT MCGALL MD

Robert McGall has 40 years experience as a civil engineer and manager in piling and geotechnical site remediation. Prior to Deep Soil Mixing Ltd (DSM), Robert set up Eco Foundations in order to develop soil mixing as a reliable construction tool. During this time, he led many successful soil mixing projects, developed a unique double rotary mixing head and also led the government-funded R&D project Soil Mix Remediation Technology (SmiRT) along with Cambridge University. Prior to this, Robert was a director of Dawson Wam Ltd. In 2012, he won the Construction News Specialist Awards for Ground Engineering.

Robert McGall MD Deep Soil Mixing
Colin Critchlow Director - Deep Soil Mixing

COLIN CRITCHLOW DIRECTOR

Colin Critchlow has 50 years experience in the construction and civil engineering industry with top companies including Laing Construction, John Howard, Kier, Tarmac and John Mowlem PLC, and he has many years experience at Director level. Prior to setting up Deep Soil Mixing Ltd, Colin worked with Robert McGall on soil mixing projects, as well as on very large ground engineering projects, where he demonstrated superior leadership skills and operational expertise.

TESTIMONIALS

Deep Soil Mixing Ltd have a reputation for excellent safety working practices and they certainly lived up to that reputation.  Their attitude to safety at the Scout Road project which involved working with asbestos fibres was second to none. Deep Soil Mixing provided us with an efficient Soil Stabilisation option, that was delivered in a professional manner.

Charlie O’MalleySite Manager, Hall Construction Ltd

“Innovative soil stabilisation techniques by Deep Soil Mixing Ltd are being used for the first time under residential dwellings to remove extreme settlements from variable ground! These works are shaving more than 18 months off of the programme for a conventional ‘load and settle’ solution as well as providing improved stability behind coastal defences. We do like an innovative solution here at Considine!”

Roland Cooper, Considine LtdConsulting Engineer on St Mary’s Bay Housing Project

The soil mixing option was well presented by Deep Soil Mixing Ltd and following the preliminary soil testing the company made a very good case for its use. This turned out to be a real benefit to the project and we are now looking to use it in other schemes.

Andy CresswellPrincipal Geotechnical Engineer, Ramboll UK Ltd

Deep Soil Mixing Ltd made a major contribution to the quay extension project in Poole. The project was carried out very smoothly with a strong emphasis on safety and a sound end product that pleased the design team from Ramboll. The cost for soil mixing was approximately half that of our initial scheme to excavate and replace.

Tony DavisSite Agent, BAM Nuttall

MEL recently completed a project in Leeds with Deep Soil Mixing Ltd and can confirm that the consultancy service we received was of a very high quality, with excellent results.

David Grouse Director, Mel Ltd

JPG has worked successfully in the past with Robert McGall on a major project in Prestatyn and as a result are pleased to endorse his new deep soil mixing company.

Kevin WheldaleContracts Engineer, Jordan Pritchard Gorman

Following a lengthy consultation period which achieved little because the consultants lacked experience, we were introduced to Deep Soil Mixing Ltd. Within two weeks of our initial meeting, they had visited the site in Nigeria and provided evidence that the project could be constructed. They then helped with machine purchase and we are now successfully stabilising the lagoon. Deep Soil Mixing Ltd oversaw the project under a consultancy agreement for the completion of the works.

David WinnChairman, Nigerian Consultancy, Land Remediation Project, Nigeria.

Deep Soil Mixing Ltd are good problem solvers who managed site issues well to deliver a effective result on time and budget

QDS RemediationWoking

Following a lengthy consultation period which achieved little because the consultants lacked experience, we were introduced to DSML. Within two weeks of our initial meeting, they had visited the site in Nigeria and provided evidence that the project could be constructed. They then helped with machine purchase and we are now successfully stabilising the lagoon. DSML is presently overseeing the project under a consultancy agreement for the completion of the works.

David WinnChairman, Nigerian Consultancy, Land Remediation Project, Nigeria.

DSML made a major contribution to the quay extension project in Poole. The project was carried out very smoothly with a strong emphasis on safety and a sound end product that pleased the design team from Ramboll. The cost for soil mixing was approximately half that of our initial scheme to excavate and replace.

Tony DavisSite Agent, BAM Nuttall

The soil mixing option was well presented by DSML and following the preliminary soil testing the company made a very good case for its use. This turned out to be a real benefit to the project and we are now looking to use it in other schemes.

Andy CresswellPrincipal Geotechnical Engineer, Ramboll UK Ltd

JPG has worked successfully in the past with Robert McGall on a major project in Prestatyn and as a result are pleased to endorse his new deep soil mixing company.

Kevin WheldaleContracts Engineer, Jordan Pritchard Gorman

MEL recently completed a project in Leeds with DSML and can confirm that the consultancy service we received was of a very high quality, with excellent results.

David Grouse Director, Mel Ltd

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