Autorzy opisują kilka nieznanych dotąd prób prowadzenia poszukiwań węgla kamiennego na Pogórzu Kaczawskim w XVIII i XIX w. Prowadzono je w rejonie Złotoryi w latach 1767–1768 i 1821 oraz pod Świerzawą w 1874 r. W obu lokalizacjach bez pozytywnych rezultatów.
EN
The article describes a number of early and unsuccessful attempts to prospect for coal in the area of Złotoryja and Świerzawa townships located in the Kaczawskie Foothills in the Western Sudetes, Lower Silesia, Poland). In the Złotoryja area, prospecting works for coal deposits have been carried out as early as in the 2nd half of the XVIII ct. However, those operations have to a large extent failed to take relevant geological aspects into account. Especially in the Semler case, one could argue that the local authorities have been persuaded to finance futile prospecting works by an embezzler. Prospecting for coal deposits in the Świerzawa area, however, and the granting of mining claims there appears to have been much more well-founded. Carboniferous coal deposits were expected to be found underneath the Permian, yet to no avail.
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