as the San Francisco Port Authority which still remained under State authority/jurisdiction. Chapter 1333 of the Statutes of 1968 transferred all authority, jurisdiction and control of the San Francisco Port Authority over San Francisco Harbor and facilities to the City and County of San Francisco. Upon the transfer of these authorities, the port authority ceased to function and was dissolved. The newly created Harbor Commission of the City and County of San Francisco assumed responsibility and control. Eventually this commission was renamed, yet again, Port Commission of the City and County of San Francisco and the Port of San Francisco to this day. Filling the downtown district Steam powered machines called "paddies" were eating away at the sand dunes and rock hills, especially Telegraph Hill, a few blocks west of the filled zone. Rock was also imported from Brooks Island off Point Richmond. Temporary steam train lines carried the earthen fill for dumping onto the mudflats. Both the Ferry Building and the Southern Pacific Building at the foot of Market Street were built upon thousands of Douglas-fir piles, up to deep. Belt Railroad In 1890 the port commissioners began developing a series of switchyards and warehouses on the reclaimed land for use of the San Francisco Belt Railroad, a line of over 50 miles that connected every berth and every pier with the industrial parts of the city and railways of America with all the trade routes of the Pacific. For a decade or more, railcar ferry transfers on steamers were the means of carrying railcars to the transcontinental systems. In 1912, the belt line was driven across Market Street in front of the Ferry Building to link the entire commercial waterfront with railways both south and north and across the continent. The line was extended north along Jefferson Street through the tunnel to link up with U.S. Transport Docks at Fort Mason and south to China Basin. Much of the Belt Railroad's right-of-way was removed following the 1989 Loma Prieta earthquake and replaced with streetcar tracks now used by the San Francisco Municipal Railway. The Belt Railroad Engine House and Sandhouse was added to the National Register of Historic Places on February 13, 1986. Embarcadero The Embarcadero (Spanish: Wharf) is the eastern waterfront and roadway of the Port of San Francisco constructed atop an engineered Seawall on reclaimed land. San Francisco's shoreline historically ran south and inland from Clarke's