Ingestino: None expected under normal use conditinos. Swallowing large pieces may cause obstruction of the gastrointestinal tract.

Inhalation: Dust may cause respiratory irritaion.

Eye: Dust may cause eye irritation. Dust particles may cause abrasive injury to the eyes.

Skin: Rubbin g product across the skin may cause mechanical irritation or abrasions. Nickel exposure can cause an allergic dermatitis called "nickel itch". Cobalt exposure can cause skin irritation and skin sensitization.

Sensitization: Nickel and cobalt can cause skin and/or respiratory sensitization.

Chronic: Long term exposure to respirable dust may cause lung damage (fibrosis) with symptoms of coughing, shortness of breath and diminished breathing capacity. Skin and/or respiratory sensitization may also occur. Chronic effects may be aggravated by smoking. Prolonged exposure to elevated noise levels during operations may affect hearing. A greater hazard, in most cases, is the exposure to the dust/fumes from the material or paint/coatings being processed. Most of the dust generated during machining is from the base material being machined and the potential hazard from this exposure must be evaluated.

Carcinogenicity: Nickel and cobalt are classified as group 2B carcinogens by ARC. Nickel is listed by NTP as reasonably anticipated to be a carcinogen.

Medical Conditions Aggravated by Exposure: Employees with pre-existing respiratory disease may be at risk from exposure.