Road Services standard drawings 5307 Manhole safety chain File type: PDF Size: 31.47 KB 5307 Manhole safety chain, PDF 31.47 KB Download now Request this file in another format such as large print, Braille or in a different language. Please email us and tell us what format you need. It will help us if you say what assistive technology you use. Is there anything wrong with this page? Help us improve our site Your comments about this page Your email (optional, we will only use this to respond.) Verification Other comments about the site: Having problems submitting this form?