The mining journal, Raiway & commercial gazette ;   no.4057 

 - London-GB :   The mining journal,   1913. 
 - páginas 510-520 :   ilustraciones blanco y negro 
 - Irregular 
 - Vol. CI, no.4057 (May. 1913) 
 - The mining journal, Raiway & commercial gazette ;   no.4057 .
 - The mining journal. .