~ SFO INDUSTRIAL FIRE PROTECTION SURVEYS Calendar Years 1949, ‘SO, ‘51, and ‘52. NUMBER I 953 partly I estimated . NUMBER 200 200 Total Surveys Required 180 -—— Total Locations 180 Total Surveys Made as ct EL 180 i si vt Ba 140 Ba NN titNNEES— 120 “ 40 ee 120 10 ene roses ee 100 100 80 60 60 an PN 40 waa MN mt NN shi ; ENN —— 40 20 0 | aatatet 7\ aad ate x ae re! ae Pata a % 0 SOURCE! SFO Safety and Fire Protection Division 136 a_i s4t