U. S. GEOLOGICAL SURVEY 
JO. 324 PL. Lll 
A. ENDURANCE OF BRICK VAULT. 
This vault, which was in the original Wells-Fargo Building, San Francisco, passed the 
although the building was completely destroyed. Note the defective steel "fire 
Photograph by Richard L. Humphrey. 
e test satisfactorily, 
fireproof" safes near by. 
."tNI^T i |: : '* 
/,'. ABSOLUTE FAILURE OF SO-CALLED "FIREPROOF" SAFES 
In the rear are the Palace Hotel I at the left) and the Crocker Building I at the right) . Photograph by 
Richard L. Humphrey. 
