Miracle concrete: the great modern industry (1909)
Miracle Pressed Stone Co. · Miracle Pressed Stone Co. · leaf 21
the regularcastings. Castings for face plates in this outfit are made withunusual precautions; only the very best quality of iron is used.A special molding sand, costing $100.00 a ton, is necessaryto produce the clean-cut, defined patterns. THOROUGH INSPECTION. In ordinary machine work, slight… … zx:
![An illustration from A group of paintings by Murphy, Tryon, Walker and Wyant [electronic resource] (1918)](https://img.insideoutlibrary.com/img/200/ia-frick-31072001442609-53-28@270.webp)
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