<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">rock bolts</topic></authority><related type="broader"><topic>anchor bolts</topic></related><variant type="other"><topic>bolts, rock</topic></variant><variant type="other"><topic>rock bolt</topic></variant> <note xml:lang="en"><![CDATA[ A rock bolt is a steel or fiberglass rod used as a long anchor bolt to stabilize the roof or walls of a rock formation in underground mining and tunneling. It is inserted and anchored in a hole drilled into the rock and transfers load from the exterior to the much stronger interior of the rock mass.   ]]></note></mads>