92 THE LAW AFFECTING ENGINEERS 



stacked, or spread on the site as, where and when directed by 

 the engineer." 



7. Clause to prevent the removal of materials. In cases 

 where it is desired to prevent the contractor leading away 

 gravel, ballast, etc., the following form of clause is sometimes 

 used : " The contractor shall not sell or otherwise dispose of, 

 except by using the same for the purpose of the contract and 

 the works to be constructed and erected thereunder, any sand, 

 stone, gravel, clay, soil, or other material, or substance of any 

 kind or description whatsoever which may be obtained from 

 excavations or found on the ground by the contractor." 



