# Directives
1 - National - STD 01-01-009 [STD 1-1.9] - Cancellation of STD 01-01-009, December 29, 1978 - PDF
2 - National - STD 01-01-009 [STD 1-1.9] - 29 CFR 1910.27, Clarification of Fixed Ladders, Relative to Manhole (Rungs) Steps