Invention Grant
- Patent Title: Mining site having a shallow angle extraction shaft, shallow angle mining method and method for constructing a penstock
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Application No.: US14890697Application Date: 2014-04-04
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Publication No.: US10196072B2Publication Date: 2019-02-05
- Inventor: Marc R. Beauvais
- Applicant: MINRAIL INC.
- Applicant Address: CA Val-d'Or
- Assignee: MINRAIL INC.
- Current Assignee: MINRAIL INC.
- Current Assignee Address: CA Val-d'Or
- Agency: BCF LLP
- International Application: PCT/CA2014/000328 WO 20140404
- International Announcement: WO2014/183192 WO 20141120
- Main IPC: E21C41/16
- IPC: E21C41/16 ; E21D9/02 ; B61B3/02 ; E02B7/20 ; E02B9/02 ; E21F13/02 ; B61B13/02

Abstract:
The present disclosure relates to a mining site comprising an extraction shaft passing through an ore body. Also included in the mining site are 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 a upper shaft extending from the arrival station. In a particular aspect, the extraction shaft can be dug at a shallow angle between 10 and 45 degrees from horizontal. A shallow angle mining method for constructing the mining site is also provided. The present disclosure additionally introduces a hydro-electric site having a penstock dug at a shallow angle, and a method of digging a penstock.
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