SAMPLING AND TESTING HIGHWAY MATERIALS. 83 
(Name and location of laboratory.) 
Report on Sample of Rock or Slag. 
Laboratory No 
192.... 
(Date reported.) 
Name 
Identification marks 
Submitted by Title Address 
Sampled , 192... Received , 192.. 
Sampled from 
Quantity represented 
Source of material 
Location used or to be used 
Examined for 
TEST RESULTS. 
Specific gravity 
Weight per cubic foot, in pounds 
Water absorbed per cubic foot, pounds per cent 
Per cent of wear 
French coefficient of wear 
Hardness ■. 
Toughness 
Remarks : 
Respectfully submitted. 
(Title). 
