The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 1981
Filed:
Aug. 08, 1979
Leonard R Nitzberg, Knoxville, TN (US);
Reclamite, Ltd., Knoxville, TN (US);
Abstract
A method of reclaiming a highwall or sharp cliff like exposure mining site. The method includes the steps of placing a first series of directional charges at preselected locations in each of the auger, longwall or deep mine entry holes proximate the opening of the hole on the face of the highwall. Directional charges are positioned on the floor of the holes and pointed upward, obviating the need to drill charge placement holes. Such solid placement maximizes the explosive impact on the overburden above the charges thereby creating rubble from the overburden and tearing out sections of the in-situ material separating the holes. In one embodiment, a further series of charges is detonated at a preselected interval in time and depth from the detonation of the first series of directional charges to provide a synergistic explosive effect to accomplish the reclamation process.