Stone worktop firm fined after workers exposed to silica dust

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A kitchen worktop manufacturing company has been fined £60,000 for repeatedly failing to protect its employees from hazardous silica dust exposure.

Inova Stone Ltd, based in Colnbrook, Slough, was prosecuted following a long history of health and safety violations. The Health and Safety Executive (HSE) reported that it had visited the company nine times over a six-year period, consistently finding poor safety practices and minimal improvements.

During a particularly concerning visit in May 2021, prompted by complaints about unsafe working conditions, HSE inspectors were shocked to discover that employees stated no one was responsible for health and safety at the site. The inspectors quickly identified numerous breaches of legislation, including a lack of control over respirable crystalline silica (RCS) — a dangerous dust released during cutting, grinding, and polishing stone.

Photos taken during the visit showed a thick layer of dust covering the workshop floor, indicating a clear failure to implement basic dust control measures. Inspectors also reported the use of unguarded machinery and unsafe storage of heavy stone slabs, further endangering workers.

As a result, Inova Stone was issued with four improvement notices. This was not the first time the company had been warned; similar enforcement action had been taken as far back as 2017.

The company pleaded guilty to:

• Breaching Section 2(1) of the Health and Safety at Work Act 1974

• Failing to comply with three improvement notices

At a hearing on 20 May at Staines Magistrates’ Court, Inova Stone was fined £60,000 and ordered to pay £7,363 in court costs.

RCS is a microscopic dust that can lodge deep in the lungs when inhaled. Over time, exposure can lead to severe and irreversible conditions, including silicosis, chronic obstructive pulmonary disease (COPD), and lung cancer. The HSE warns that silica dust is now the second most serious health risk to construction workers after asbestos.

The issue is compounded by the increasing use of engineered stone, which contains higher levels of silica and is contributing to faster and more severe cases of silicosis in younger workers.

Karen Morris, HSE Principal Inspector, commented after the sentencing:

“Inova Stone Ltd repeatedly failed to take the necessary steps to protect their workers, despite receiving extensive advice and multiple opportunities to comply.

The size of the fine reflects the seriousness of their failings and should act as a stark warning to other employers in the industry. The risks associated with silica dust are well known and must be taken seriously.”