The breweries that survived Prohibition in Philadelphia grew into a major manufacturing sector in what was already a highly industrialized city. The largest was Schmidt’s but breweries like Gretz, Hornung, Esslinger’s and Ortlieb’s were all operating around the clock making beer to slake the nation’s thirst. Between the 1930s and the 1980s the beer industry worldwide was in the process of consolidating. By the 1980s, the breweries that had not gone out of business had been purchased by bigger brewers. On June 1, 1987, production ceased at Schmidt’s: for the first time since 1682 there were no breweries in Philadelphia.