この記事の翻訳を準備しています。それまでの間、英語の原文を表示します。
労働市場 · 1998/4/221 分で読めます
Safety Standards for Roof Bolts in Metal and Nonmetal Mines and Underground Coal Mines
ローカル自動翻訳 · 情報源の原言語
概要
MSHA is revising its safety standards for roof and rock bolts at metal and nonmetal mines and underground coal mines by updating the reference to the American Society for Testing and Materials (ASTM) standard for roof and rock bolts and accessories. The new reference reflects technological advances in the design of roof and rock bolts and support materials. It will improve the level of protection provided by the standards currently in use.
情報源の原言語: Federal Register — Department of Labor原文の発表を開く →