Report Abuse. 1  Hitch Installation Cost. 2  Trailer Hitch Installation Cost. 3  This Site Might Help You.  I paid $400 to have a removable hitch installed on my 1983 Mercedes 300SD, but I feel I was really ripped 1  off. if it's a custom modification, like the one I'm doing for a friend, could be approaching $1000.
Cavity Structural Effect. The Cavity Structural Effect (CSE) was discovered in spring 1983 by chance by Viktor S. Grebennikov (1927-2001), entomologist and painter, when he moved his hand over multi cavernous bee nests and felt warmth emanating from them.
Cavern Formation and Effects. Caverns form in much the same way that sinkholes do. Sometimes when groundwater dissolves sediment underground it simply leaves a big hole and the ground above doesn't fall in. These holes are caverns and caves, which are just really large caverns.