Aluminum oxide (fibrous forms) (Alumina)

Making/using refractories and ceramics; abrasives and polishing; cutting or grinding alumina materials; alumina fiber insulation; alumina refining/smelting operations [1][2].

Breathing dust or fibers at work; DIY sanding, grinding, or blasting; nearby residents may inhale windblown dust from facilities; eye/skin contact with dust; swallowing is usually minor [1][2][3].

Short‑term exposure can cause cough and throat/chest irritation; long‑term high exposure may reduce lung function and cause pneumoconiosis/fibrosis. Cancer evidence for alumina alone is inadequate; aluminum oxide is not listed in the NTP Report on Carcinogens [1][2][4].

Refractory, kiln, and furnace workers; insulation installers/removers; abrasive blasting/grinding/polishing workers; maintenance/demolition crews; people with asthma or COPD [1][3].

Use local exhaust and wet methods; avoid dry sweeping; wear appropriate NIOSH‑approved respirators when needed; use HEPA vacuums and wet‑wipe; wash up and change clothes after dusty work; follow SDS and fiber‑handling guidance [3][1].