{"product_id":"vintage-nos-high-voltage-mining-operation-warning-ssp-sign","title":"Vintage NOS \"High Voltage\" Mining Operation Warning SSP Sign","description":"\u003cp\u003ePorcelain-coated steel industrial safety sign reading \"CRANES HIGH VOLTAGE HAZARD CHECK BOOM\" with a bold upward directional arrow, executed in stark black and red on a white field for maximum visibility. Designed for use in active mining operations, the sign would have been positioned near crane pathways to warn operators of overhead electrical hazards and the need to check boom clearance. The typography is clean and highly legible, with strong geometric spacing typical of mid-century industrial design. Mounting holes at the corners remain intact, and the reverse shows the original olive-toned backing with handling marks from storage. Salvaged from the White Pine Copper Mine in Michigan, this example was never installed, retaining a crisp, unused face despite decades of age.\u003cbr\u003e\n\u003cbr\u003e\nShows minor surface wear and storage marks to the reverse, with light scuffs and handling marks present. Front display surface remains clean and unused with strong color and gloss.\u003cbr\u003e\n\u003cbr\u003e\n18\" W x 36\" H\u003cbr\u003e\n\u003cbr\u003e\nMM - C-20312 - 042326\u003c\/p\u003e\n\n\u003cp\u003eFor information regarding shipping, please visit our Terms \u0026amp; Conditions page \u003ca class=\"GeneratedLink\" href=\"https:\/\/industrialartifacts.net\/pages\/shipping\" target=\"_blank\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n","brand":"Industrial Artifacts","offers":[{"title":"Default Title","offer_id":44014212612139,"sku":"C-20312","price":2450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0194\/8170\/files\/83defaed-9999-545f-899f-1b87a87d64dc.jpg?v=1777590042","url":"https:\/\/industrialartifacts.net\/products\/vintage-nos-high-voltage-mining-operation-warning-ssp-sign","provider":"Industrial Artifacts","version":"1.0","type":"link"}