Home/Coal Mining Legislation/Coal Mining Legislation – 14 Coal Mining Legislation Coal Mining Legislation – 14 Admin07/08/20240 20 Less than a minute Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 0% Coal Mining Legislation Coal Mining Legislation - 13 1 / 40 1. Every bars meant for supporting the roadway roof shall be set on the sides of the roadway in holes of at least ------cm deep. 25 35 30 50 Coal Mining Legislation 2 / 40 2. Soda-acid type extinguishers or water shall not be used for fighting -------- Oil fires Electrical fires. Both the above None of the above Coal Mining Legislation 3 / 40 3. The lid used over a prop shall have a width not less than the ------- diameter of the prop thickness of the prop both of the above none of the above Coal Mining Legislation 4 / 40 4. Where development of underground is done without panel system, the following shall be implemented. Precautions are to be taken specially to avoid fire, Artificial panels should be created by the construction of stopping’s. Special creation of panels is not required, None of the above. Coal Mining Legislation 5 / 40 5. The ratio of CO to O2 is to be tested for percentage of carbon monoxide once in at least. seven days seven days, six days, seven days, Coal Mining Legislation 6 / 40 6. The surface structures and supports within a horizontal distance of -----from entrances to a mine shall be of incombustible 06 meters 15 meters 10 meters 25 meters Coal Mining Legislation 7 / 40 7. An edge or a prominent crack or slip in the roof shall be supported with A pair of props on both sides of slip Roof shall be stitched with ropes by using lagging of chocks, Roof bolting is to be followed, Supported with at least a pair of cogs or cross-bars suitable lagged. Coal Mining Legislation 8 / 40 8. Adequate precautions are to be taken to prevent danger to persons from falling or rolling of timber, tools, others appliances or material when the inclination to horizontal of the workings exceeds. 20 degrees 15 degrees 30 degrees 25 degrees Coal Mining Legislation 9 / 40 9. On a road where human agency carries load, at a gradient exceeding 150 steps are to be provided. The dimension of these steps in their height and width shall not exceed ____ respectively 0.1 meter & 0.30 meter. 0.80 meter & 0.50 meter. 0.18 meter & 0.35 meter. 1.08 meter & 0.25 meter. Coal Mining Legislation 10 / 40 10. Footpath used for carrying loads by human agency shall be provided with suitable steps when the inclination exceeds 15 degrees. 25 degrees, 45 degrees, 35 degrees, Coal Mining Legislation 11 / 40 11. The ratio of CO formed to the O2 absorbed is an indicator of The CO generation The spontaneous heating condition of the seam The amount of Oxygen absorbed None of the above. Coal Mining Legislation 12 / 40 12. Inflammable materials shall not be stored within a distance of ------from any entrance to a mine. 25 meters 15 meters 20 meters 12 meters Coal Mining Legislation 13 / 40 13. Every stopping between the main intake and main return airways shall be --------or more in thickness to prevent short circuit leakage of air. 50 centimeters 75 centimeters 35 centimeters 25 centimeters Coal Mining Legislation 14 / 40 14. Foam type extinguishers are best suitable for fighting Electrical fires. Oil fires Any fire Not suitable for any fire Coal Mining Legislation 15 / 40 15. Before the commencement of any operations underground the Manager shall submit Systematic Support Rules to the Regional Inspector within ___ days before starting. 15 days 25 days 35 days 30 days Coal Mining Legislation 16 / 40 16. All unused workings connected to the surface which are not permanently closed, shall be checked for signs of illicit distillation of liquor by a competent person once in 20 days 25 days 15 days 30 days Coal Mining Legislation 17 / 40 17. Where a prop is set on sand or, other loose material, a flat base-piece used shall have a thickness of minimum __ cm. 5 centimeter 25 centimeter 75 centimeter 15 centimeter Coal Mining Legislation 18 / 40 18. Unless a safety belt of life line is used persons shall not be permitted to work in an inclination to horizontal exceeding. 45 degrees 55 degrees 35 degrees 25 degrees Coal Mining Legislation 19 / 40 19. In supports setting the cogs shall not be less than ---------in length. 0.20 meters 1.02 meters 1.20 meters 10.2 meters Coal Mining Legislation 20 / 40 20. The ratio of CO to O2 is to be tested and completely analyzed once in at least ------ 20 days 25 days 30 days 15 days Coal Mining Legislation 21 / 40 21. In any opencast mine fire shall not be lit within a distance of___. 25 meters 10 meters 20 meters 15 meters Coal Mining Legislation 22 / 40 22. If the % of inflammable gas in general body of return air is higher, the manager shall inform the inspector within__ days provided he has taken precautions for the envisaged higher degree of gassiness. 7 days 1 day Four days Forthwith Coal Mining Legislation 23 / 40 23. The lid used over a prop shall have a length not less than ------- 60 centimeters 25 centimeters 50 centimeters None of the above Coal Mining Legislation 24 / 40 24. If it is not practicable to follow the additional precautions for the envisaged degree of increased gassiness, and on a request in writing by the owner, agent or manager, may defer the observance of the required precautions, subject to conditions, the regional inspector can differ such observance for a period not exceeding___ Sixty days. Forty days. Fifty days. Thirty days. Coal Mining Legislation 25 / 40 25. On every idle day every depillaring district shall be inspected---------times Three times Two times One time Possible number of times Coal Mining Legislation 26 / 40 26. If a Mine is worked without a continuous succession of shifts, After all persons have left the mine, all lights shall be extinguished and all power cut off. The power shall be kept on all the time. The ventilating fans shall be put off once the persons come out. None of the above. Coal Mining Legislation 27 / 40 27. Which of the following statement is true Gang-planks used for loading purposes are deemed to be part of a footpath. Gang-planks used for loading purposes shall not be deemed to be part of a footpath unless they are so inclined or constructed as to give a secure foot-hold. Gang-planks cannot be used for loading purposes under any conditions. None of the above Coal Mining Legislation 28 / 40 28. Different degrees of gassiness of the coal seams are decided by The Mines Manager after making tests The Ventilation officer after making tests The Chief Inspector or an Inspector authorised after making tests The safety committee, or safety officer where safety committee is not there Coal Mining Legislation 29 / 40 29. Graham’s ratio means---------------- The ratio CO-formed/O2- absorbed. The ratio CO- absorbed /O2- formed. Both of the above None of the above Coal Mining Legislation 30 / 40 30. All unused workings which have not been sealed off shall be inspected once in every --------- Four days. Six days. Five days. Seven days. Coal Mining Legislation 31 / 40 31. The gassiness of the mine has to be checked for rate of emission of inflammable gas in cubic meters per ton of coal raised and the percentage of inflammable gas in the general body of air once in. 25 days 15 days 35 days 30 days Coal Mining Legislation 32 / 40 32. Which of the following statement is correct Before erecting cogs in a depillaring area, props shall be erected at the corners of each cog. Before erecting props in a depillaring area, cogs shall be erected at the corners of each cog Cogs and props shall be erected simultaneously in a depillaring area, None of the above Coal Mining Legislation 33 / 40 33. All the fire fighting equipment, material and arrangements provided for fire-fighting shall be inspected once in. Every month Two months Fifteen days During every replacement Coal Mining Legislation 34 / 40 34. While withdrawing the supports in a sequence, Withdrawal of a cog to precede withdrawal of its corner props; Withdrawal of corner support to precede withdrawal of cogs Both cogs and corner supports to be removed at a time by two different persons, Withdrawal depends on the roof conditions. Coal Mining Legislation 35 / 40 35. Where a prop is set on sand or, other loose material, a flat base-piece used shall have a width of minimum __ cm. 5 centimeter 25 centimeter 75 centimeter 15 centimeter Coal Mining Legislation 36 / 40 36. On receipt of information on increased degree of gassiness where Manager has taken precautions for the envisaged higher degree of gassiness, the Regional Inspector shall inspect to confirm the degree of gassiness within. 12 days 15 days 25 days 30 days Coal Mining Legislation 37 / 40 37. The lid used over a prop shall have a thickness not less than ---------- 8 centimeters 12 centimeters 15 centimeters None of the above Coal Mining Legislation 38 / 40 38. Where a prop is set on sand or, other loose material, a flat base-piece used shall have a length of minimum __ cm. 5 centimeter 25 centimeter 75 centimeter 15 centimeter Coal Mining Legislation 39 / 40 39. Size of a panel is to be determined due consideration shall be given to Quantity of production needed, Physico-Mechanical properties of coal The water bearing nature of the strata and geological disturbances, Enabling complete extraction of the pillars within the incubation period of the coal. Coal Mining Legislation 40 / 40 40. When it is not practicable to dress overhangs of the face stay props shall be erected at intervals of Not exceeding Two meters Not exceeding Two and half meters Not exceeding One meter. Interval to be decided by Mines Manager Coal Mining Legislation Your score is The average score is 67% LinkedIn Facebook Twitter 0% Admin07/08/20240 20 Less than a minute
