Latest News from CQA

Wednesday, 28 June, 2017 - 10:13
ADBA 2017

CQA International will be ADBA next week where we will be available to discuss all things engineering with you, and in particular Containment Engineering.

Wednesday, 28 June, 2017 - 09:06
CQA International joins the All-Party Parliamentary Climate Change Group

We are pleased to announce that we have been invited to join the All Party Parliamentary Climate Change Group as a recognition of its work over the past 20+ years.

This is a coalition of leading businesses, parliamentarians and organisations informing better policy-making in government. The APPCCG puts climate change adaption and mitigation at the core of its work, and at the core of decision making.

Friday, 5 May, 2017 - 11:38
Turnkey Containment Engineering Solutions

Speak to us today to discuss a turnkey solution for your Primary, Secondary or Tertiary Containment Engineering needs.

CQA International Ltd are celebrating 25 years engineering excellence in 2018 and due to client demand are now offering a one stop shop solution to deliver all of your containment engineering requirements to the highest quality.

Monday, 20 March, 2017 - 10:52
Geological mapping and geotechnical study completed in Caucuses

CQA International Ltd complete a geological mapping and geotechnical interpretation for a mining company in the Caucuses as spring shows its first signs of arriving.

Tuesday, 14 March, 2017 - 12:54
Collyweston slate mine produces historic roofing slate

CQA International is proud to announce that mining has now commenced at an historic slate mine in Northamptonshire. CQA International Ltd has assisted with gaining planning permission for the mine, has prepared the designs for the new mine and has carried out associated environmental surveys.

The mine, which operated until the 1960s, has been left dormant ever since due to low demand for the roofing slate. However, due to a massive reduction in reusable reclaimed slate the mine is now deemed viable and CQA International were keen to assist with the reopening of the mine.

But why open a roofing slate mine in Northamptonshire when there is an abundance of cheap and plentiful roofing slate available? Collyweston roofing slate has been used on some of the country’s most iconic buildings and is found on over 2000 listed buildings within the UK. Some of the more well-known buildings to feature Collyweston Slate are the Guildhall in London and Kings College, Cambridge. It is even used on a public building in New York.

Collyweston Slate is produced by extracting the "Log" as it is termed and then subjecting it the elements where freeze thaw action slowly cleaves the individual layers until they are workable by hand. Traditional methods are employed to cleave the slates from the log and dress into a multitude of sizes before being used on a roof.

Several hurdles had to be overcome. First it is quite rare for new mines to open in the UK, so it is not something planning committees are faced with daily. Planning was complicated further as the site was not included in the local Mineral Development Plan and so a special case had to be made. Special measures had to be included to protect any bats which may use adjacent old workings as a roost.

The reopening of the mine is a great boost to traditional crafts in the small Northamptonshire village and will provide a secure source of authentic roofing materials to the benefit of both listed buildings and new constructions into the future.