811 locates only public utilities, and does not provide depths for those locates. Our utility locating services employ both GPR and EM technology to provide a necessary and accurate supplement to One Call locates to provide utility mapping, and clearances for soil boring and direction drilling. ...
Work was stopped, in 1840, before the system was completed because of the intense popular discontent arising from the burden of debt which had been assumed and because the success of competing railways was then fully assured. In 1845 the state began to sell its canals and railways to private...