<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31439413</termId><termName>rock bolts</termName><termType>PT</termType><termNote><![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.   ]]></termNote><termCreatedDate>2026-03-30 20:58:26</termCreatedDate><relation><relationType>UF</relationType><termId>31439414</termId><termName>bolts, rock</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31439415</termId><termName>rock bolt</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31414053</termId><termName>anchor bolts</termName><termType>PT</termType></relation></term>  </Zthes>