Abstract: A method for site remediation for mitigating contamination from metals or metal compounds, particularly resulting from the situation of mine tailing waste on or near water sources, including the reprocessing and redeposit of separated sands and slimes in-site in a manner to encourage rather than inhibit leaching of residuals by chelating agents or biological agents with recovery of leachate and removal of metals or metal compounds.

Abstract: An enhancement device for database management systems utilizing a board or screen format having an array of cells with a set of mnemonic icons selctively positioned as portals to associated keys identifying records in the database, the set of icons preferably consisting of common playing cards arrangeable in a mnemonic composite.

Abstract: The earth sheltered building consists of a thin elliptoidal shell which is attached to a generally curvilinear top viewed foundation. The elliptoidal shell meets the foundation at a generally horizontal latitudinal plane which is spacially below and parallel to the equatorial plane of the elliptoid. The building has ingress and egress means defined generally by the intersection of a pair of latitudinal lines and a pair of longitudinal lines of the elliptoid. Ingress and egress means can also be obtained by the omission of any meridian surface section of the elliptoid or any section defined by a plane spacially parallel to a meridian plane. The building can also be elongated by placing a vaulted section of elliptic vertical cross section congruous with two hemi-elliptoidal shells. The building can be constructed by the use of predetermined inner and outer form panels which assemble into inner and outer form networks.

Abstract: The anaerobic, displacement-type digester is for the biological production of methane gas. The process involves the anaerobic digestion of solid waste and water or a sewage slurry to produce a methane-rich gas, which can be utilized for its energy value. The digester includes a tank-type enclosure comprising an input end, a digesting chamber and an output end. At the output end a sealable output chamber is provided which can separate the output end from the digesting chamber. The output chamber is comprised of a lower partition and an upper partition, which allows the output chamber to be sealed from the digesting chamber. As waste material is introduced at the input end of the digester, a slurry is formed. The upper stratum of material or scum must periodically be removed from the slurry to provide space for additionally introduced waste into the digester and to optimize the anaerobic digestion process. An upper stratum displacement means is provided at the digesting chamber of the digester.