Here, the silica is melted with the bases; there, the crushed and mixed components are calcined to expel the water then melted in the crucible. Loaded to the jaws, giving off glows and visib... Read allHere, the silica is melted with the bases; there, the crushed and mixed components are calcined to expel the water then melted in the crucible. Loaded to the jaws, giving off glows and visible heat, the hearths devour shovelfuls of coal, constantly renewed by panting, almost nake... Read allHere, the silica is melted with the bases; there, the crushed and mixed components are calcined to expel the water then melted in the crucible. Loaded to the jaws, giving off glows and visible heat, the hearths devour shovelfuls of coal, constantly renewed by panting, almost naked men. Leaning over these braziers, blinded, deaf, with blurred eyes under burnt eyelashes... Read all