 
		 
		 
		General view of sewer looking up manhole as other Water Dept. personnel look down.
 
		Joe Cerrone, Inspector, Industrial Waste Unit, PWD, enters storm drain to search for source of oil spill, 1989
 
		Sewer worker Anthony Holston enters sewer, 1990
 
		Manholes like this give access to city’s sewer system, 1961
