Information: This is an old - not maintained - article of the AEIOU. In the Austria-Forum you find an updated version of this article in the new AEIOU.
TonClay, fine-grained, mostly yellowish to grey earthy substance, mostly produced by weathering. In 1993, 45 clay pits producing high-quality clay were operating in Austria under the supervision of the mining authority. Output amounted to 2,985,165 tons of clay.
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