Abstract: A method for developing a landfill with a compactor machine having a three-dimensional position sensing equipment, a computer, and a display. The method includes traversing the worksite with the compactor machine and determining deflection of the worksite at a plurality of locations while each of the locations is beneath the compactor machine. The compactor machine defines wheel tracks over which a plurality of wheels pass while traversing the worksite. The method includes recording the determined deflection of each of the locations on the display. The deflection may be recorded beneath only the wheel tracks of the compactor machine, such that areas passing between the wheel tracks of the compactor machine are not recorded on the display.

Abstract: A method and system and the use of a 3-D positioning system for monitoring a landfill and landfill material added thereto and undergoing compaction and measures in real time the relative density of the compressed landfill material. The method and system calculates thickness, volume, density during the landfill operation to ensure that the landfill is comprised of compacted layers of substantially optimized density.

Abstract: A method and system and the use of a 3-D positioning system for monitoring a landfill and landfill material added thereto and undergoing compaction and measures in real time the relative density of the compressed landfill material. The method and system calculates thickness, volume, density during the landfill operation to ensure that the landfill is comprised of compacted layers of substantially optimized density.

Abstract: The present invention provides a connection system for attaching and detaching a device to and from a support arm. The connection system is comprised of a key member having a keyed portion. A first section is attachable to a support arm. The first section is dimensioned to receive the keyed portion of the key member. A second section is attachable to a device. The second section is dimensioned to attach to the first section. An actuator is operable to move between a first position and a second position. The second section is locked to the first section when the actuator is in the first position. The second section is detachable from the first section when the key member is locked to the first section and the actuator is in the second position.

Abstract: The present invention provides a connection system for attaching and detaching a device to and from a support arm. The connection system is comprised of a key member having a keyed portion. A first section is attachable to a support arm. The first section is dimensioned to receive the keyed portion of the key member. A second section is attachable to a device. The second section is dimensioned to attach to the first section. An actuator is operable to move between a first position and a second position. The second section is locked to the first section when the actuator is in the first position. The second section is detachable from the first section when the key member is locked to the first section and the actuator is in the second position.

Abstract: A process for selectively leaching lead and silver chlorides from a sulfide ore residue in a rapid time which comprises brine leaching the residue under pressure at a temperature above the normal boiling point of the solution, preferably above 100.degree. C.Modifications are leaching at the agglomeration temperature of sulfur when present in the residue to agglomerate the sulfur for ease of recovery, and flashing from leach temperature to ambient as a lead chloride crystallization recovery step to produce a large crop of lead chloride crystals per pass.

Abstract: Alkali and alkaline earth metal chlorides contained in a residue of a chlorination process of a feed material of bauxite or clay associated with coal are removed by the addition of sulfuric acid which causes their conversion to their sulfate form, and the simultaneous production of hydrochloric acid. The residue, which has been rendered environmentally acceptable, can be disposed of readily, for example, to an ash pond or disposal area for flue gas desulfurization sludges. The hydrochloric acid is then recycled to the chlorination process. The hydrochloric acid may be utilized, for example, as a binder of the feed material, to prechloridize the feed material or as a portion of the leach solution when the chlorination process is a hydrochloric acid leach.

Abstract: A process for recovering aluminum from clays associated with coal or bauxite containing iron, siliceous material and titanium which comprises: (a) chlorinating the clay or bauxite in an oxidizing atmosphere to selectively chlorinate and vaporize iron chloride from the remaining chlorides, (b) chlorinating the residue from step (a) in a reducing atmosphere or carbon monoxide and vaporizing the chlorides of aluminum, silicon, titanium, and the residual iron, (c) separating and recovering the formed vaporized chlorides by selective condensation. Silicon tetrachloride may be added to step (b) to suppress the chlorination of silicon. If the clay contains alkali or alkaline earth metals, then the residue of step (b) is treated with sulfuric acid to convert the soluble chlorides, e.g., gypsum, to sulfates and to regenerate a chloridizing and binder solution for pelletizing the clay or bauxite.

Abstract: A hydrometallurgical process is used to recover lead from a lead-bearing ore concentrate. The lead-bearing ore concentrate is leached with a solution of cupric chloride in order to precipitate lead as lead chloride, produce elemental sulfur and substantially leave the balance of the ore concentrate sulfides in unreacted form. The residue of the cupric chloride leach is leached with a brine solution in order to solubilize the lead chloride to the exclusion of the balance of the residue. Thereafter, the lead chloride is crystallized from the brine solution. Elemental lead may be obtained by the reduction of the lead chloride crystals.The present process avoids air pollution problems inherent to smelting processes, allows for a high recovery of lead of 97% or greater and allows for the direct production of a high purity lead.

Abstract: A process for recovering aluminum from fly ash containing iron, silicon and titanium which comprises: (a) chlorinating the fly ash in an oxidizing atmosphere to selectively chlorinate and vaporize iron chloride from the remaining chlorides, (b) chlorinating the residue from step (a) in a reducing atmosphere of carbon monoxide, in the presence of added silicon chloride to suppress the chlorination of silicon, and vaporizing the chlorides of aluminum, silicon, titanium, and the residual iron, (c) separating and recovering the vaporized chlorides by selective condensation, and treating the residue of step (b) with sulfuric acid to convert calcium chloride to gypsum, and to regenerate a chloridizing and binder solution for pelletizing fly ash feed.