Abstract: Some methods for making a granular material comprise crushing demetallized slag particles with one or more crushers and screening the crushed demetallized slag particles with one or more screens to separate the demetallized slag particles into two or more fractions, the granular material comprising at least one of the fractions of the demetallized slag particles. Prior to the crushing, ones of the demetallized slag particles having a size that is less than or equal to 2 inches can account for at least 90% of the demetallized slag particles. An iron-compound content of the demetallized slag particles, by weight, can be less than or equal to 10%. Crushing and screening can be performed such that ones of the demetallized slag particles of the granular material having a size that is less than or equal to 1.25 mm account for at least 90% of the demetallized slag particles of the granular material.

Abstract: The present disclosure includes systems, devices, and methods for identifying, detecting, and/or tracking rail features. In some aspects, a system includes a camera and a computer having at least one memory, at least one processor configured to receive a plurality of images from the camera, and for each of the images: assigning a location identifier and identifying one or more rail features that correspond to one of a plurality of predetermined rail features. In some systems, the at least one processor is configured to determine a location of each of the one or more identified rail features.

Abstract: A security fence structure including posts, rails, fence gratings, mounting brackets, fence clips and fasteners is easily assembled in the field. The rails are secured to the post by mounting brackets and fasteners, and the fence grating secured to the rails by means of the fence clips and fasteners. The fence gratings, in conjunction with the mounting brackets, fence clips and fasteners are resistant to climbing.

Abstract: A security fence structure including posts, rails, fence gratings, mounting brackets, fence clips and fasteners is easily assembled in the field. The rails are secured to the post by mounting brackets and fasteners, and the fence grating secured to the rails by means of the fence clips and fasteners. The fence gratings, in conjunction with the mounting brackets, fence clips and fasteners are resistant to climbing.

Abstract: A system and method for controlling a boiler comprising a microcomputer operatively connected to a microcontroller wherein the microcontroller is configured to provide flame safeguard operations and the microcomputer is configured to provide operating control instructions to the microcontroller. The boiler control system may operate either in a stand-alone, cascade master or cascade slave configuration.

Abstract: A hinge apparatus comprising structure to support a user interface incorporated into the cabinet housing of an electro-mechanical system for improved viewing and interaction with the user interface when the cabinet housing is opened during technician service, while simultaneously not obstructing access to the cabinet interior.

Abstract: A fence structure providing a secure and resilient perimeter.

Abstract: A heat exchanger plenum apparatus comprising structure to support, among other components, an engine silencer substantially incorporated therein.

Abstract: A hinge apparatus comprising structure to support a user interface incorporated into the cabinet housing of an electro-mechanical system for improved viewing and interaction with the user interface when the cabinet housing is opened during technician service, while simultaneously not obstructing access to the cabinet interior.

Abstract: A system and method for controlling a boiler comprising a microcomputer operatively connected to a microcontroller wherein the microcontroller is configured to provide flame safeguard operations and the microcomputer is configured to provide operating control instructions to the microcontroller. The boiler control system may operate either in a stand-alone, cascade master or cascade slave configuration.

Abstract: A system and method for controlling a boiler comprising a microcomputer operatively connected to a microcontroller wherein the microcontroller is configured to provide flame safeguard operations and the microcomputer is configured to provide operating control instructions to the microcontroller. The boiler control system may operate either in a stand-alone, cascade master or cascade slave configuration.

Abstract: A rail maintenance vehicle includes a frame, a workhead, an actuator, a pilot valve, and a throttling valve. The frame includes wheels that travel along rails. The actuator extends and retracts the workhead with respect to the frame. The pilot valve receives a fluid and controls the flow of the fluid to at least one output. The throttling valve adjusts a pressure of the fluid at an output relative to a pressure of the fluid at an input. The pilot valve and the throttle valve are coupled such that the fluid travels through the pilot valve and the throttling valve to cause the workhead to be extended or retracted.

Abstract: A vibrating device having a flywheel rotatably disposed within a housing assembly. The housing assembly includes one or more openings therethrough structured to allow an effective amount of air to pass between the housing assembly enclosed space and the atmosphere. By exchanging an effective amount of air between the enclosed space and the atmosphere, the temperature within the housing assembly remains below the breakdown point of a lubricant used to reduce friction created when the flywheel is in use.