Miracle concrete: the great modern industry (1909)
Miracle Pressed Stone Co. · Miracle Pressed Stone Co. · leaf 108
Culvert on 20-Degree Diagonal. Before and After Withdrawing Forms, 94 MIRACLE STEEL COLLAPSIBLE CULVERT FORMS—continued … How it was done, what materials were used and how much ofeach, how the forms were all withdrawn from one end of the culvert{because the water pipe was in the way), and other facts of interestare reported here in a way that is calculated to interest supervisorsand other road authorities. It shows…
