Le Blanc

 
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Haulage methods in a coal mine, 1819.
Haulage methods in a coal mine, 1819.
Steam engines for extracting water from mines, 1819.
Steam engines for extracting water from mines, 1819.
Steam engine, 1819.
Steam engine, 1819.
Drainage tunnel in unstable ground, Tecklenburg, Germany, 1819.
Drainage tunnel in unstable ground, Tecklenburg, Germany, 1819.
Coal extraction and drainage, France, 1819.
Coal extraction and drainage, France, 1819.
Steam engine, 1819.
Steam engine, 1819.
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