50 Years Ago Humans From the September 28, 1935, issue By Science News September 28, 2005 at 12:37 pm - More than 2 years ago Share this:Share Share via email (Opens in new window) Email Click to share on Facebook (Opens in new window) Facebook Click to share on Reddit (Opens in new window) Reddit Click to share on X (Opens in new window) X Click to print (Opens in new window) Print GRAND COULEE DAM TOPS BOULDER DAM AS “BIGGEST” With construction on Boulder Dam now virtually complete, Grand Coulee Dam on the Columbia River is stepping into the engineering forefront. Bids have just been opened by the U.S. Bureau of Reclamation for 4,220,000 barrels of cement for the Grand Coulee Dam.