15 — Mining Engineering
Jazz Rails
A section of deliberately offset or staggered rails installed on haulage inclines to derail and arrest runaway tubs before they gain dangerous speed. Demonstrates passive runaway-protection devices in mine transport instruction.
01 — Same Category
More in Mining Engineering
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15
Model of Different Types of Stoppings
A demonstration model showing the construction of temporary and permanent ventilation stoppings used to seal off roadways and direct airflow underground. Aids classroom instruction in mine ventilation planning and control devices.
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16
Model of Air Crossings (Under Crossing and Over Crossing)
A model illustrating both under-crossing and over-crossing arrangements that carry intake and return air currents past each other without mixing. Used to explain airway layout and ventilation control structures in underground mines.
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17
Working Model of Regulator
A working model of a ventilation regulator, the adjustable opening in a stopping used to control the quantity of air passing through a district. Demonstrates air distribution and resistance control in mine ventilation networks.
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18
Working Model of Airlock
A working model of an airlock, the pair of doors that allows men and materials to pass between airways at different pressures without short-circuiting the ventilation. Used in ventilation engineering instruction.
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19
Runaway Switch
A haulage-track safety device that diverts runaway tubs or mine cars off the track on gradients, protecting workers and equipment lower down the roadway. Demonstrated in mine transport and haulage safety practicals.
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20
Drop Warwick
A suspended baulk or bar that drops across a haulage track to arrest runaway tubs on inclined roadways. Used to teach statutory runaway-prevention arrangements in rope haulage systems.
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22
Retarders
Track-mounted devices that apply controlled resistance to tub or mine car wheels to limit speed on gradients. Used in haulage laboratory demonstrations of speed control and safe train handling underground.
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23
Model of Fore Poling
A model demonstrating the fore-poling method of advancing support, in which poles or sheets are driven ahead of the face to hold weak ground while excavation proceeds. Used in instruction on tunnelling and drivage through loose strata.
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24
Working Model of Ventilation District of Underground Coal and Metal Mine
A working model of a complete ventilation district showing intake and return airways, districts, and control devices for both coal and metal mine layouts. Enables students to trace air circuits and understand district ventilation design.
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25
Model of Wedge Cut
A model illustrating the wedge cut pattern of blast holes used to create a free face in tunnel and drivage blasting. Supports instruction in drilling and blasting design and burn/cut geometry.
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26
Model of Underground Mine Support
A model displaying common underground support systems such as props, bars, chocks, and roof bolts as applied at roadways and faces. Used to teach strata control practice and support selection.
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27
Single Height Tell-Tale
A borehole-mounted roof movement indicator with a single anchor horizon that gives a visual reading of roof sag above a roadway. Used to teach routine strata monitoring and trigger-level based support management.
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