Mandatory action signs are used to instruct persons of a specific course of action that shall be followed.
Lab Safety Symbols
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(MSS) Mandatory Action Signs :: Wear Protective Clothing 195726
IMO MANDATORY MSS010 SIGNS Wear protective clothing - Datrex
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60 Mandatory Signs & Symbols Including 20 With Text Added
✓ (MSS) Mandatory Signs :: Keep Closed At Sea/High Noise Level 19-0949
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✓ (MSS) Mandatory Action Signs