Starting at the thick end of each shrimp, remove 1inch of shell and make a 1inch slit down the exposed flesh. Heat a clean griddle or skillet and wipe down with an oiled cloth. Sprinkle the shrimp with the salt and place on the hot oiled skillet to cook 1 minute. Turn and continue on second side. Finish cooking the shrimp by placing each on the slit end for 1 minute. Serve with the lemon wedges.