Precautions against dust

The owner,agent or manager of every mine shall take such steps as are necessary for the minimising of emissions of dust and for the suppression of dust which enters the air at any workplace below ground or on surface and for ensuring that the exposure of workers to respirable dust is limited to an extent that is reasonably practicable,but in any case not exceeding the limits that are harmful to the health of persons.                                                       For the purpose of this regulations,a place shall not be deemed to be in a harmless state for persons to work or be therein if the 8hours time weighted average concentration of airborne respirable dust in miligram per cubic meter of air sampled by a gravimetric dust sampler of a type approved by and determined in accordance with the procedure as specified by the Chief Inspector by a general or special order  exceeds three where working is being made wholly in a coal seam or where free respirable silica present is less than 5percent and the value arrived at by dividing the figure of fifteen with the percentage of free respirable silica present in other cases.                                                        The owner,agent or manager of every mine shall With six months of the coming into force of this regulations and once at least every six months thereafter or whenever the Regional Inspector so requires by an order in writing,cause the air at every work place where respirable dust is evolved to be sampled and the concentration of respirable dust there in determined.                                                                           Provide that,if any measurement of any work place shows the concentration in excess of fifty percent or seventy five percent of the allowable concentration specified in sub regulation (a) hereinafter referred to as "permissible" limit the subsequent measurement shall be carried on at in travels not exceeding three months or one months respectively.                                                    Provided further that,such measurement  shall also be carried on immediately upon the commissioning of any plant, equipment or machinery or upon the introduction of any new work practice or upon any alteration therein that is liked to bring about any substantial change in the levels of airborne respirable dust.                      The samples shall as far as practicable,be representative of the levels of dust exposure of work persons.For this purpose,the sampler shall be positioned on the return side of the point of the dust generation and within 1meter ot the normal working position of but not behind the operator or other worker whose exposure is deemed to be maximum in his working group.                                                                      Based on the results of fixed point sampling the representative dust exposure profile for different categories of workers shall be estimated and as a measure of cross check the static monitoring of selected workers whose exposure is deemed to be representative of their working groups.                                   Samples shall be taken by a person who as been specially  trained for the purpose and by the sampling equipment and accessories that have been checked to ensure correct maintenance and efficient operation thereof and examined,tested and calibrated on a date which is not earlier that one year.                                         Respirable dust content of the samples and in case of samples collected from a working other than the working being made wholly in coal seam,quartz content shall be determined as soon as practicable at a properly equipped laboratory approved in writting by the Chief Inspector in that be half.                       All results of measurement of airborne respirable dust and all other relevant particular shall be systematically recorded within fourteen days of the date of collection of samples,in a bound paged book kept for the purpose and every entry in the book aforesaid shall be countersigned and dated by the manager within twenty-four hours.             
Mining Engineering

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Mining Engineering

First-aid station

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First-aid  station is a place fixed by the manger for rendering first-aid to person injured.Every first-aid station is provided with equipment as prescribed in the Third schedule of mines Rules namely: a stretcher and two blanket,Sets of splints(1.4m,0.9m,0.3m,)and sufficient tringular bandages.First-aid boxes(or cupboards),one per150 person,containin sufficient supply of large and small dressings and burn dressings,sufficient supply of sterilised cotton and adhesive plaster,roller bandages,Dettol or other antiseptic solution,a tourniquet,scissors and safety pins,soap.                                                  First aid station shall be provided at the following places On surface:-                     At pit top/incline mouth.In workshop,screening plant and    ...
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Audio visual alarm

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  When a truck or dumper backs up a person standing behind the vehicle may get crushed.To alert such a person truck/dumpers are provided with audio visual alarm.As soon as the vechile is put in reverse gear, a special horn starts blowing and the backlight flashes.It is a statutory requirements that truck,dumper or loader shall not be run unless the audio visual alarm is working.
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MINE WORKING

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  Opencast working--In open cast working,the following precautions shall be observed,namely:                                          In alluvial soil,morum,gravel,clay,debris or other similar ground-;*the side shall be sloped at an angle of sefty not exceeding 45degree from the horizontal or such other angle as the regional inspector may permit by an order in writing are subject to such conditions as he may specify therein;or the side shall be kept benched and the hight of any bench shall not exceed 1.5meter and the breadth thereof shall not be less than the height:।       Provide that the regional inspector may,be an order in writing and subject to such conditions as he may specify therein, exempt form the operation of his clause any working in the case of which special difficult exist,which in his opinion make compily with the provisions their ...
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