Put cucumber slices in a clean pickling container. Sprinkle salt over cucumbers; add 2 quarts water; let stand 2-3 hours. Drain, rinse, and drain thoroughly. Discard liquid. Combine 3 cups vinegar and 3 cups water; bring to a boil. Add cucumbers, simmer about 8 minutes. (Cucumbers should not become soft.) drain well, discarding liquid. Combine 2 cups vinegar and 1 cup water with remaining ingredients; simmer 10 minutes. Add drained cucumbers. Bring to a boil. Pack hot pickles and liquid into hot jars, leaving 1/4 headspace. Remove air bubbles. Adjust two piece caps. Process 10 minutes in a boiling water canner.