Mining site having a shallow angle extraction shaft, shallow angle mining method and method for constructing a penstock

A mining site, comprising:

• an extraction shaft passing through an ore body;
• a lower shaft intersecting a path of the extraction shaft;
• a starting station extending from the lower shaft and from a bottom of the path of the extraction shaft;
• an arrival station overhanging above a top of the extraction shaft;
• and
• an upper shaft extending from the arrival station.

A method for constructing a penstock, comprising:

• planning a path of the penstock to be dug within a rock mass;
• excavating a lower shaft, the lower shaft intersecting the path of the penstock;
• excavating a starting station extending from the lower shaft and from a bottom of the path of the penstock;
• excavating the penstock;
• and
• excavating an arrival station overhanging above a top of the penstock.

A hydro-electric site, comprising:

• a penstock dug within a rock mass;
• a lower shaft intersecting a path of the penstock;
• a starting station extending from the lower shaft and from a bottom of the path of the penstock;
• and
• an arrival station overhanging above a top of the penstock.