Ammonia is considered a high health hazard because it is corrosive to the skin, eyes, and lungs. Exposure to 300 ppm is immediately dangerous to life and health.

Air bending is characterized as a metal forming operation in which a metal part is formed without the punch and die closing completely on the part. Likewise, the term is used to describe a method of bending where the material is expected to take its shape from the amount of depth penetration of the punch. (see related term below - bending under load, bend angle)

Agribusiness is denoting to all activities that are relevant to the production, transformation / value adding, distribution and retailing of food, fibre and associated products including the provision of services such as education, banking, finance, investment and technical adviceto participants in the chain.

An Apparel has something to do with garments and other devices to be worn by mankind to adorn, cover or protect the body or person. It includes: garments or devices; combinations of such garments or devices with other things;

Asbestos mineral relates to certain minerals that have a fibrous structure, are heat resistant and chemically inert, possess high electrical insulating qualities, and are of sufficient flexibility to be woven.

An Apartment is a studio where the living, cooking and sleeping space are combined, generally in one large room. One- and two-bedroom apartments generally have separate areas for the living room, kitchen, bathroom and bedroom(s).

Armor-piercing ammunition is by US federal definition, a projectile or projectile core which may be used in a handgun and which is constructed entirely (excluding the presence of traces of other substances) from one or a combination of tungsten alloys, steel, iron, brass, bronze, beryllium copper, or depleted uranium. This ammunition excludes a shotgun.

Many Aluminum cleaners contain hydrofluoric acid which is extremely corrosive and toxic. Hydrofluoric acid is extremely dangerous!. upon contact, it destroys the flesh down to the bone as the fluoride ion continues to act until it is neutralized by a calcium store.