ABSTRACT.

The present Titration’s Work has like objective the analyzing the construction of

the works of Access, that they permit the I design and development of the fourth Level

of the mine Ra.

The mine Ra of Property of the Mining Company Ra, correspond to a Deposit

type Brecha that has been exploited intensely in previous years. News campaigns of

exploration have revealed to a considerable volume of Mining Reserves, information

that shows in the Chapter N 1.

The Work presents a technical analysis to the alternatives of the works of

access; in it principal: Performances, operations Unitarians and of general- services.

In chapter aside presents him the chosen alternative Underground Excavation Ramp,

study that include: The design technician, economic and the program of construction.

In the different Chapters and in the Annex, meets the selection of the Diagram of Shot,

to Loading and Haulage Equipments, System of Ventilation and of the Net Compressed

Air.

The technical design, due to the length of the Underground Excavation Ramp,

you consider an analysis of optimization of the use of Loading and Haulage equipments

that conclude with the location of the stations of Re-Transporting.