Keep all Cylinders Chained
Mandatory Signs specify actions that are required to safeguard health and/or avoid injury. Mandatory signs provide specific instructions that MUST be carried out. These industrial and workplace safety signs are essential for promoting the wearing of PPE and abiding by safe workplace procedures. Symbols (or pictograms) are depicted in white on a blue circular background. Sign wording, if necessary, is in black lettering on a white background.