The comment period on the Confined Spaces in Construction Notice of Proposed Rulemaking (NPRM) has been extended to Feb. 28, 2008. The proposed rule addresses topics specific to the construction industry. Using a systematic approach to confined space safety, the rule explains how to assess the hazards, classify the space, and implement effective procedures to protect employees. In addition, the rule requires controlling contractors (with overall authority of the site) to coordinate confined space operations among a site’s multiple employers.