The Jungle was written about the corruption of the American meatpacking industry during the early 20th century. Although Sinclair originally intended to focus on industrial labor and working conditions, food safety became the most pressing issue. Sinclair's account of workers' falling into rendering tanks and being ground, along with animal parts, into "Durham's Pure Leaf Lard", gripped public attention. The morbidity of the working conditions, as well as the exploitation of children and women alike that Sinclair exposed showed the corruption taking place inside the meat packing factories. Foreign sales of American meat fell by one-half. Considered a classic and important example of the muckraking tradition of journalism.