Preliminary examination topaz mine
1949
220
In view of the topaz and dos amigos veins giving the most encouraging results in the preliminary sampling it is thought that these veins should receive first attention
Ministerio de Energía y Minas - Centro de Documentación
Marjorie Montiel
Hospital Bautista, 1 C. Este, 1 Cuadra al Norte. Managua
2280-9500 al 09
De Lunes a Viernes de las 8:00am - 5:00pm.
