Abstract: A loading platform for a wheeled vehicle. The loading platform comprises a frame extending along a longitudinal axis. The frame comprises an elongated central shell having two spaced-apart elongated beams with an upper end and an elongated central plate secured to and connecting the upper ends of the spaced-apart elongated beams. The frame also comprises cross bracing assemblies extending on opposed sides of the elongated central shell, each one of the cross bracing assemblies including a plurality of intersecting bracing plates secured at a proximal end to a respective one of the elongated beams of the central shell.

Abstract: A loading platform for a wheeled vehicle. The loading platform comprises a frame extending along a longitudinal axis. The frame comprises an elongated central shell having two spaced-apart elongated beams with an upper end and an elongated central plate secured to and connecting the upper ends of the spaced-apart elongated beams. The frame also comprises cross bracing assemblies extending on opposed sides of the elongated central shell, each one of the cross bracing assemblies including a plurality of intersecting bracing plates secured at a proximal end to a respective one of the elongated beams of the central shell.

Abstract: A spreader assembly comprising: a frame having a longitudinal axis; at least two bins mounted to the frame, two of the at least two bins being disposed sequentially along the longitudinal axis and each including a movement imparting assembly oriented substantially parallel to the longitudinal axis of the frame and being configured to advance material lengthwise in opposed directions toward adjacent ends of the two bins; and at least one discharge movement imparting assembly mounted to the frame, oriented substantially perpendicularly to the longitudinal axis of the frame and being configured to receive material conveyed by at least one of the two bin movement imparting assemblies and advance the material towards a lateral end of the frame.

Abstract: The present invention relates to a snowplow arranged to be towed behind a vehicle. The towed snowplow comprises: a frame removably securable to the vehicle; at least one moldboard mounted to said frame and extending under said frame; and at least one pivotable side wing plow mounted to one side of the frame and configurable between a non-operative configuration and a snow plowing configuration in which the at least one pivotable side wing plow extends laterally from the side of the frame. It also relates to a method for plowing snow using a towed snowplow.

Abstract: A spreader assembly comprising: a frame having a longitudinal axis; at least two bins mounted to the frame, two of the at least two bins being disposed sequentially along the longitudinal axis and each including a movement imparting assembly oriented substantially parallel to the longitudinal axis of the frame and being configured to advance material lengthwise in opposed directions toward adjacent ends of the two bins; and at least one discharge movement imparting assembly mounted to the frame, oriented substantially perpendicularly to the longitudinal axis of the frame and being configured to receive material conveyed by at least one of the two bin movement imparting assemblies and advance the material towards a lateral end of the frame.

Abstract: A method for controlling the extraction of gold from a gold ore by the cyanidation process in which a leaching step including the addition of a lead compound, which is typically lead nitrate or other lead salt, is used. In order to maintain stable conditions in the leaching process, and to use the leaching reagents efficiently, an analysis step is used to monitor the concentration of thiocyanate in the cyanidation step. This value has been found to be directly related to the rate of addition of the lead compound in the pre-leaching or leaching step. Further, the rate of addition of lead compound is also directly related to both the time required for, and the efficiency of, the cyanidation step. By establishing a target value, and a preferred range, for the thiocyanate concentration based on the properties of the ore being processed, optimal extraction conditions can be established in the leaching process and maintained by monitoring the thiocyanate concentration.

Abstract: A method for controlling the extraction of gold from a gold ore by the cyanidation process in which a leaching step including the addition of a lead compound, which is typically lead nitrate or other lead salt, is used. In order to maintain stable conditions in the leaching process, and to use the leaching reagents efficiently, an analysis step is used to monitor the concentration of thiocyanate in the cyanidation step. This value has been found to be directly related to the rate of addition of the lead compound in the pre-leaching or leaching step. Further, the rate of addition of lead compound is also directly related to both the time required for, and the efficiency of, the cyanidation step. By establishing a target value, and a preferred range, for the thiocyanate concentration based on the properties of the ore being processed, optimal extraction conditions can be established in the leaching process and maintained by monitoring the thiocyanate concentration.

Abstract: Gold is recovered from aqueous solutions which include a solubilizing reagent by contacting the solution with hydrogen under selected conditions until the gold precipitates, and removing the precipitate from the solution. The reagent comprises a thiourea or a thiosulfate and the solution is a leach, eluate or strip solution. The contacting may be by gas sparging or under hydrogen pressures, e.g. up to about 300 psi, and usually the temperature is within about 20.degree. to 170.degree. C. If the initial feed solution is too dilute, it can be concentrated by ion exchange or solvent extraction followed by elution or stripping respectively. Any silver present is precipitated with the gold.