Newscopy: "A study in arrested motion is the is photograph of a long brick wall collapsing as workmen clear a two-block area to make way for the $3,274,000 Ping Yuen housing project. to be ituated on two blocks of Pacific-st between Kearny and Stockton-sts. The project will house 231 families and will be completed in about two years. The wall was part of a garage at 755 Pacific-av."