Brian Roemmele
@BrianRoemmele
we can only see what we think is possible...
가입 January 2010
44.2K 팔로잉 중 489.4K 팬
Looking like an ancient archaeological dig… this is Concrete pouring at the Hoover Dam in the 1930s. The massive heat generated by the curing concrete required an embedded cooling system of water pipes to prevent the dam from cracking
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