The building was a major social gathering area for the North Mission with two banquet halls in the basement and its first floor Assembly Hall that included pool tables . Fees from its pool tables and licensed slot machines helped cover the cost of running the building , which had 21 employees in 1955 . The Hall Association was forced to close the Assembly hall 's slot machine operations in the early 1950s due to a national crackdown on gambling and unions . Working people started abandoning the Mission for the suburbs , causing a general decline of the building and the neighborhood . The San Francisco Labor Council considered selling the building as early as 1955 but decided to renovate instead . The Labor Council took out a $ 275,000 loan to bring the building up to code , including a new front entrance . The basement was turned into a number of smaller office spaces , while the Assembly Hall and the Auditorium next door were combined into a single space for larger meetings . There were damages to the exterior from the 1957 San Francisco earthquake that struck the city , the largest since the 1906 earthquake
1957 San Francisco earthquake
1957 San Francisco earthquake
Redstone Building