header bg

Question:

You must NEVER smoke or perform any activity involving fire within 25 feet of __________.

A classes 1, 2, 3, and 4.
Explaination

Although there are exceptions for the following classes, you should not smoke in close proximity to any dangerous material. No smoking is permitted within 25 feet of classes 3 and 2.1. (flammable materials and gases). No smoking or holding a lighted smoking instrument such as a cigar or pipe is permitted within 25 feet of classes 1, 3, 4, or 4.2. (explosives, flammable liquids or solids, or spontaneously combustible materials).