48 THE USE BOOK. 



interests or prevent the proper management and protection of 

 the Forests. 



Definite evidence by qualified witnesses is necessary to sustain 

 charges against any claim. 



Good judgment, care, and initiative on the part of the Forest 

 officer to add to or vary, for proper reason to be explained 

 by him, the nature of the report will add greatly to its value, 

 and will assist and protect legitimate mining and the interests 

 of the United States by preventing fraudulent appropriation of 

 nonmineral land under the guise of compliance with the mineral 

 land laws. 



Lode claims. The Forest officer should examine on the ground 

 the dimensions of the outcropping of the vein or lode, and 

 note the general character of the rock in which the deposit is 

 contained. 



He should search for discovery shafts, pits, or tunnels which 

 the owner has made in an effort to find or disclose the vein 

 and ore. He should make notes of the appearance and extent 

 of the vein or ore exposed in the excavations, and should par- 

 ticularly note whether there is a distinct deposit of ore minerals, 

 or whether, for example, there is merely iroh pyrites distributed 

 in slight amount throughout the rock of the claim. 



He should measure the width of the vein between the rock 

 walls or the thickness of the mineralized zone of rock exposed 

 in the excavations, and should observe the dip that is, tho 

 inclination downward from the horizontal of the vein or 

 mineralized rock, as well as the strike or course of the vein, 

 noting the latter as NW., W., etc. 



He should take a sample of each important grade of ore 

 found in the excavation or in any vein on the claim, and ob- 

 serve the proportion of each kind of ore. He should then select 

 a sample consisting of a number of pieces which, in his opinion, 

 represents the average value of the vein or mineralized rock, 

 being careful that these samples are actually taken from the 

 vein and have not been brought from elsewhere. These 

 samples need not weigh more than 3 pounds each, and 

 they should be carefully wrapped and the wrapper labeled with 



