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| Spanish | English |
| piedra calcárea | limestone |
| piedra ferruginosa | bog iron ore |
| piedra natural | natural stone A gemstone that occurs in nature, as distinguished from a man-made substitute |
| Residuos del cortado y serrado de piedra | waste from stone cutting and sawing |
| Suelos y piedras | soil and stones |
| Tierra y piedras | soil and stones |