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Crossed picks marking stone extraction.
Also known as: Saisekichi mark, Stone pit mark
Denotes a quarry or open stone-working site on a Japanese topographic map.
Marks a quarry or open stone-working site on a GSI topographic sheet.
Contexts: Maps
Uses crossed hand tools, an extraction convention shared with mapping agencies elsewhere, so the symbol is legible to a reader who has never used a Japanese map.
Contexts: Maps
Two picks drawn crossing near their heads, the handles running out to the lower corners of the mark.
The mine mark is a pick crossed with a hammer. This one is two picks, and the head of the second tool is the only difference.