<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31373776</termId><termName>pig iron</termName><termType>PT</termType><termNote><![CDATA[ Crude high-carbon iron ore that has been smelted and cast into ingots. This may be remelted and used as a source of material for cast-iron products, or may be further refined for use in producing steel. ]]></termNote><termCreatedDate>2026-03-30 20:40:48</termCreatedDate><relation><relationType>UF</relationType><termId>31373777</termId><termName>pig-iron</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31343510</termId><termName>iron</termName><termType>PT</termType></relation></term>  </Zthes>