have you noticed hay derrick constructed like the following pictures ? The one my Dad built hand pivot point like the one in the picture. In my travels around the country, I've been able to find only two. One in Grantsville Ut and the other in Callao Ut. (on the Nevada border) I'd be interested to know if there are others, in your part of the world.
My older brother told me that my Dad got the idea while in the San Diego ship yards, watching ships being loaded.
My older brother told me that my Dad got the idea while in the San Diego ship yards, watching ships being loaded.