A demolition tool comprises first and second elongated bar portions, and first and second fork portions integrally formed at an angle to the first and second elongated bar portions respectively. The first and second elongated bar portions are generally parallel to each other, spaced apart at a predetermined distance, and connected together via plates and/or cross bars. In use, the demolition tool is grasped by the user with two hands at its handle end portions.

A demolition tool comprises first and second elongated bar portions, and first and second fork portions integrally formed at an angle to the first and second elongated bar portions respectively. The first and second elongated bar portions are generally parallel to each other, spaced apart at a predetermined distance, and connected together via plates and/or cross bars. In use, the demolition tool is grasped by the user with two hands at its handle end portions.

A demolishing method utilizes an aggregate stack demolishing scaffold apparatus mounted to an upper part of an aggregate stack including four smoke funnels arranged adjacent to each other. An uneven scaffold including one plate-shaped upper scaffold portion is placed on an upper end of each smoke funnel. A lower scaffold portion is coupled to the upper scaffold portion and located in lower positions in the smoke funnels with the upper scaffold portion being placed on the upper ends of the smoke funnels. A chain block suspends and supports the uneven scaffold from and on an inner wall of each smoke funnel, and adjusts a suspending height. With this configuration, the upper scaffold portion is located on the upper ends of the smoke funnels, and thus there is no possibility of contact between the scaffolds in the smoke funnels causing a worker to lose his balance, thereby improving safety.

A demolishing method utilizes an aggregate stack demolishing scaffold apparatus mounted to an upper part of an aggregate stack including four smoke funnels arranged adjacent to each other. An uneven scaffold including one plate-shaped upper scaffold portion is placed on an upper end of each smoke funnel. A lower scaffold portion is coupled to the upper scaffold portion and located in lower positions in the smoke funnels with the upper scaffold portion being placed on the upper ends of the smoke funnels. A chain block suspends and supports the uneven scaffold from and on an inner wall of each smoke funnel, and adjusts a suspending height. With this configuration, the upper scaffold portion is located on the upper ends of the smoke funnels, and thus there is no possibility of contact between the scaffolds in the smoke funnels causing a worker to lose his balance, thereby improving safety.

A dust suppression system has one or more fluid dischargers configured to discharge a fluid capable of suppressing generation of dust to a work area of a building by remote operation. The fluid discharger includes a discharge nozzle configured to discharge the fluid; a first swivel joint structure including a first rotating-side body connected to and supporting the discharge nozzle and a first fixed-side body rotatably supporting the first rotating-side body; a first electric linear motion mechanism including a first support part and a first movable part supported by the first support part in a linearly movable manner; and a first rotation mechanism configured to convert linear motion of the first movable part into rotational motion to rotationally displace the first rotating-side body. The dust suppression system can further reduce power consumption as well as can accurately discharge a fluid from a fluid discharger to a predetermined work area.

A dust suppression system has one or more fluid dischargers configured to discharge a fluid capable of suppressing generation of dust to a work area of a building by remote operation. The fluid discharger includes a discharge nozzle configured to discharge the fluid; a first swivel joint structure including a first rotating-side body connected to and supporting the discharge nozzle and a first fixed-side body rotatably supporting the first rotating-side body; a first electric linear motion mechanism including a first support part and a first movable part supported by the first support part in a linearly movable manner; and a first rotation mechanism configured to convert linear motion of the first movable part into rotational motion to rotationally displace the first rotating-side body. The dust suppression system can further reduce power consumption as well as can accurately discharge a fluid from a fluid discharger to a predetermined work area.

A detonator includes a control circuit and a charging circuit. The control circuit receives a first signal transmitted using a voltage applied to a cable by a blasting device and transmits a second signal to the blasting device using a current flowing to the cable. The charging circuit performs a charging operation by receiving the voltage through the cable. The charging circuit stops the charging operation while the control circuit transmits the second signal to the blasting device.

A tactical entry multi-tool for first responders is disclosed. The tool can be used to breach encountered obstacles. The tool can include an axe blade, hammer head, breaching wedge, “T” slot connector/wrench, and a handle assembly. The axe blade and hammer head are located at the top of the tool with the breaching wedge located at the bottom at a fixed angle. The axe blade is located opposite of the hammer head with a sturdy handle located between the two in a generally T shaped orientation. The handle assembly is located along the shaft of the tool. The “T” slot is located between the axe and hammer, and has the dual function of being a wrench to open/close valves, and acting as a slot to insert the breaching wedge of a second tool for additional force. The multi-tool may be configured from a single piece of high-performance metal.

A tactical entry multi-tool for first responders is disclosed. The tool can be used to breach encountered obstacles. The tool can include an axe blade, hammer head, breaching wedge, “T” slot connector/wrench, and a handle assembly. The axe blade and hammer head are located at the top of the tool with the breaching wedge located at the bottom at a fixed angle. The axe blade is located opposite of the hammer head with a sturdy handle located between the two in a generally T shaped orientation. The handle assembly is located along the shaft of the tool. The “T” slot is located between the axe and hammer, and has the dual function of being a wrench to open/close valves, and acting as a slot to insert the breaching wedge of a second tool for additional force. The multi-tool may be configured from a single piece of high-performance metal.

The present disclosure relates to a blasting system. The blasting system includes: detonators disposed in blasting holes perforated in a blasting target, and provided to detonate explosives; and a worker terminal configured to be connected to any one of the detonators by a worker. Wherein the worker terminal includes: a storage part configured to store a blasting map; a terminal position generation part configured to generate a terminal position indicating a position of the worker terminal; and a determination part configured to receive the logging signal, and match the terminal position at the time when the worker terminal receives the logging signal with the blasting map to identify a detonator connected to the worker terminal.