It was American workers on the world's first atomic bomb who became the first industrial victims of beryllium, a rare but especially light, stable and strong metal whose toxic dust can kill those who breathe it.

Now Seafarers doing ship maintenance and have used Jasons De-rusting and de-scaling guns (also known as J-gun or Jasons pistol) raise concerns about exposure to beryllium.

Unlike other metals, beryllium does not spark and was therefore used on tanker ships containing fuel.

Beryllium can cause a long-term lung disease (berylliosis) in some people by triggering an immune (allergic) response in the body. In general, significant exposure to beryllium in a respirable form is required for any disease to occur, and symptoms may take up to 20 years to develop even after exposure has stopped.