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If you cut or polish an engineered stone counter, you work with a product that looks clean and safe. It installs well, resists stains, and comes in many colors. It also hides a real hazard. Most engineered stone has 90 to 97 percent crystalline silica. When you cut, grind, or polish it, you can fill the air with fine silica dust. That dust can scar the lungs and lead to silicosis, COPD, kidney disease, lung cancer, and even death.
Engineered stone blends crushed rock with resin and pigment. Shops like it because slabs are uniform, easy to source, and predictable to install. Natural stones vary in size and quality. The risk is the silica content. A typical engineered slab is above 90 percent silica. Granite often ranges from 10 to 45 percent. Marble is usually under 5 percent. More silica in the slab means more respirable silica at the blade. Resins can also add fumes and other byproducts when you grind hard.
Exposure: what recent numbers show
Recent medical reports from the United States list 219 cases of silicosis in engineered-stone workers by late 2024. They include at least 14 deaths and 26 lung transplants. California alone reported 52 cases by 2023, with 20 workers already in advanced disease and 10 deaths. Many of these workers were around age 45. That is young for silicosis.
These counts are likely low. Silicosis often takes 10 years or more for symptoms to develop. Yet many engineered-stone workers are getting sick after only a few years. Many small shops do not run medical checks or air tests, and inspections reach only a fraction of all employers. As screening improves, the numbers will rise.
Engineered stone counter vs natural stone: a plain comparison
- Silica content: engineered stone 90–97 percent; granite 10–45 percent; marble under 5 percent.
- Work tasks: sink cutouts, edge profiling, and dry polishing on engineered stone can exceed OSHA limits within minutes. The same tasks on lower-silica stone still need controls, but the starting risk is lower.
- Other exposures: resins can add chemicals and heat-breakdown products during heavy grinding.
Bottom line: engineered stone can create far more dangerous dust in less time.
Australia’s response, and why others may follow
Australia reviewed the data and found that real-world controls were not stopping disease in this trade. On July 1, 2024, it banned the making, sale, processing, and installation of engineered-stone slabs. It also set tighter rules for all tasks with 1 percent or more silica, which require a risk plan, air monitoring, and strict process controls. An import ban on engineered stone began January 1, 2025. The message is clear. If controls do not protect workers, regulators may remove the hazard. The U.S. has not banned engineered stone, but OSHA has stepped up inspections. Some states are moving faster than others.
What this means for U.S. shops today
Treat every engineered stone counter job as high risk unless you have air data that proves otherwise. Do not trust your eyes. The worst particles are too small to see.
Use a stack of controls:
- Wet methods on saws, grinders, and drills.
- Barriers or enclosures for hot tasks.
- No dry sweeping.
- Training and upkeep so water tanks are full, hoses are intact, and filters are changed.
Keep records. Write task plans, track maintenance, sample the air when conditions change, and enroll at-risk workers in medical surveillance.
NeSilex: the simple way to cut silica at the source
Plain water lowers visible dust, but fine silica often slips through. NeSilex is a high-dilution suppressant that makes water spread and cling. A small dose in the water line helps droplets wrap and trap the finest particles right where they form. You use the same tools and tanks you already have. You do not need extra vacuums, power packs, or special shrouds.
If you want a fast and reliable way to reduce respirable silica on an engineered stone counter job, NeSilex is the #1 practical choice. It makes prevention simple, repeatable, and easy to prove.
Further reading
- Deadly Countertops: An Urgent Need to Eliminate Silicosis among Engineered Stone Workers
- Deadly Dust: Engineered Stone Is Making California Workers Sick
- Safe Work Australia – Engineered Stone Ban