Miracle concrete: the great modern industry (1909)
Miracle Pressed Stone Co. · Miracle Pressed Stone Co. · leaf 18
Rock Face Without Margin, 9-inch Block.Pace Plate H-94. Price $6.00. FIRE-PROOF. … Hammered Face, 9-inch BlockFace Plate H-12 CONCRETE itself is fire-proof. The Double Stag*gered Air Spaces of the Miracle Block again serve afurther important duty. They cause a double circulationof air from top to bottom, both near the hot surface and thecool surface of the wall, whether those…
![An illustration from Current architecture: published in connection with a joint exibition [sic] held in Boston November 1916 (1916)](https://img.insideoutlibrary.com/img/200/ia-currentarchitect1916bost-104-161.webp)
