McComb, Mississippi. Top left: "Tamping down concrete slab and riser." Top right: "Finishing off concrete slab." Center left: "Concrete slab and riser." Center right: "Concrete slab and riser on sanitary toilet." Center left: "Raising superstructure - placing on slab." Center right: "Placing superstructure on concrete slab." Bottom left: "Concrete and carpenter Workers - sanitary." Bottom right: Workers constructing concrete slab and riser.