The National Marker Company sign with the legend ?DANGER - EXCESSIVE NOISE - EAR PROTECTION MUST BE WORN? is mostly used in construction sites and industrial facilities to inform the visitors and workers that ear protection is mandatory in the area because of excessive noise. The danger sign shows the message in white text on a red base with black text on a white base to catch attention. The clear, bold font helps in enhancing the readability from a distance. The danger signage has an NMC Sign Muscle coating to protect the text against fading, scratches, scuffing, mold, and moisture and complies with OSHA 29 CFR-1910.145 standard.