Limestone quarry in Ciutadella, Menorca (Balearic Islands, Spain), which was worked with double picks on descending platforms. Photo from Wikimedia Commons, http://commons.wikimedia.org/wiki/File:S%27Hostal_pedreres765.JPG (Licence: Creative Commons, Attribution-ShareAlike 3.0 Unported).
Limestone quarry in Ciutadella, Menorca (Balearic Islands, Spain), which was worked with double picks on descending platforms. Photo from Wikimedia Commons, http://commons.wikimedia.org/wiki/File:S%27Hostal_pedreres765.JPG (Licence: Creative Commons, Attribution-ShareAlike 3.0 Unported).
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