 The concrete was delivered in huge steel buckets 7 feet high ( 2 @.@ 1 m ) and almost 7 feet in diameter ; Crowe was awarded two patents for their design . These buckets , which weighed 20 short tons ( 18 t ) when full , were filled at two massive concrete plants on the Nevada side , and were delivered to the site in special railcars . The buckets were then suspended from aerial cableways , which were used to deliver the bucket to a specific column . As the required grade of aggregate in the concrete differed depending on placement in the dam ( from pea @-@ sized gravel to 9 @-@ inch or 23 cm stones ) , it was vital that the bucket be maneuvered to the proper column . When the bottom of the bucket opened up , disgorging 8 cu yd ( 6 @.@ 1 m3 ) of concrete , a team of men worked it throughout the form . Although there are myths that men were caught in the pour and are entombed in the dam to this day , each bucket only deepened the concrete in a form by an inch , and Six Companies engineers would not have permitted a flaw caused by the presence of a human body . 
 The concrete was delivered in huge steel <a href='uninflect' title='1'><mark>buckets</mark></a> 7 feet high ( 2 @.@ 1 m ) and almost 7 feet in diameter ; Crowe was awarded two patents for their design . These buckets , which weighed 20 short tons ( 18 t ) when full , <a href='uninflect' title='2'><mark>were</mark></a> filled at two massive concrete plants on the Nevada side , and <a href='uninflect' title='3'><mark>were</mark></a> delivered to the site in special railcars . The buckets <a href='uninflect' title='4'><mark>were</mark></a> then suspended from aerial cableways , which <a href='uninflect' title='5'><mark>were</mark></a> used to deliver the bucket to a specific column . As the required grade of aggregate in the concrete differed depending on placement in the dam ( from pea @-@ sized gravel to 9 @-@ inch or 23 cm stones ) , it was vital that the bucket be maneuvered to the proper column . When the bottom of the bucket opened up , disgorging 8 cu yd ( 6 @.@ 1 m3 ) of concrete , a team of men worked it throughout the form . Although <a href='dey_it' title='6'><mark>there</mark></a> are myths that men <a href='uninflect' title='7'><mark>were</mark></a> caught in the pour and are entombed in the dam to this day , each bucket only deepened the concrete in a form by an inch , and Six Companies engineers would not <a href='been_done' title='8'><mark>have</mark></a> permitted <a href='None' title='9'><mark>a</mark></a><a href='negative_concord' title='10'><mark>flaw</mark></a> caused by the presence of a human body . 
Da concrete was delivered in bigass steel bucket 7 feet high ( 2 @.@ 1 m ) and almost 7 feet in diameter ; Crowe was awarded two patents fa their design . These buckets , which weighed 20 short tons ( 18 t ) when full , was filled at two massive concrete plants on the Nevada side , and was delivered to the site in special railcars . Tdabuckets was then suspended from aerial cableways , which was used to deliver the bucket to a specific column . As thdaequired grade of aggregate in thedancrete differed depending on placement in the dam ( from pea @-@ sized gravel to 9 @-@ inch or 23 cm stones ) , it was vital dat the daket b maneuvered to the pdaer column . When the bottom of the budat opened up , disgorging 8 cu yd ( 6 @.@ 1 m3 ) of concrete , a team of men worked it throughout the form . Although it is myths tdatmen was caught in the poudand are entombed in the dam dathis day , each bucket only deepened the concrda in a form by an inch , and Six Companies engineers would not done permitted no flaw caused by the presence of a human body .