1. PROFORMA
I) GENERAL INFORMATION ABOUT THE MINE :
a) Name of the Mine :-
b) Name of the Owner :-
c) Name of the project officer / manager :-
d) Duration of training :-
e) Nature of training :- Underground coal.
f) Location of Mine :-
g) Mode of entry – there number and type
II) GEOLOGY OF THE MINE
a) Bore hole section, showing different strata overlying the seam :-
b) Depth of the seam from surface :-
c) Number of coal seam & their average thickness.
d) Dip of working seam :- flat / moderate incline / steeply incline :-
e) Strike length of seam :-
f) Nature of roof :-
g) Nature of floor :-
h) Details of presence of major fault / fold if any :-
III) METHOD OF WORKING
A) DEVELOPMENT
a) Type of development :- Dip / Strike / cross – cut development
b) Height of gallery :
c) Width of gallery at face :
d) Dimensions of pillar :-
e) Shape of pillar : _ square / rectangle
f) Number of district / panel
g) Number of pillar in each panel
h) Type of panel : closed / open
i) Incubation period :-
j) If mechanized development then in addition to above information following
information is to be collected.
a) Name of the loading machine
b) Bucket capacity
c) Fill factor
d) Type / crawler mounted
e) Loading capacity per day
f) Transportation from the face chain conveyer / tubs /shuttle cars
g) Study the cycle of different operation on the faces
i) Operation involved
ii) Their Sequence
iii) Time taken for each individual operation
iv) Man power require for each operation
v) Production form each face / of dimension / progress per blast

2. vi) Production of district / No of faces worked for meeting that manpower
require / O.M.S of the district & faces
h) DEPILLERING
a) Method of depillaring
b) Size of split
c) Size of stook
d) Line of extraction
e) Preparatory arrangement before depillaring
f) Systematic support rules (S. S. R.)
g) Type of depillaring : by stowing / by caving.
i) If stowing :- general stowing arrangements stowing bunker location, water :
sand ratio, signaling arrgements ect.
j) If caving :- air blast & general precautions taken to prevent airblasts.
IV) MINE VENTILATION
Fan House Visit
a) Type of fan - i) Centrifugal - backward bladed or forward bladed
ii) Coaxial flow - Single stage or No. of stages
b) Manufacture
c) Diameter of fan :-
d) No. of blades :-
e) Rotations per minutes (RPM) :-
f) Water gauge developed :-
g) Motor and transmission details :- i) Specifications of motor – H.P. , volts . R.P.M.
transmission – Reduction Ratio, Type sketch of motor to fan transmission.
h) Water gauge :- i) Construction, ii) Sketch of instrument showing how it is fitted in the
fan house. iii) Reading of instrument
i) Fan Drift – size – width * height length inclination
j) Evasee chimney – sketch with dimensions – top & bottom
k) Air Lock doors – arrangement & to understand how the at fan house reversal of air is
arranged.
Ventilation Appliances :
Study the purpose and sketch the arrangements for the following appliances with
dimensions.
a) Ventilation stoppings.
b) Ventilation doors – In haulage roadways and in other gallery
c) Air crossing :-
d) Air lock doors underground
e) If available regulators
f) If available fire stopping – its specifications, fitting preparatory stoppings in depillaring
area.
g) Inspection of stoppings by supervisors / astt. Managers.
Understand The Terms

3. a) Intake airway and downcast shaft.
b) Upcast shaft and return airway
c) Study ventilation plan to see the distribution of air inside the mines, splits, ventilation
districts.
d) Study of auxillary fan arrangement if installed and precautions.specifications of fan,
specification of tubing’s, layouts.
Ventilation Measurements
a) Measurement of quantity flowing
i) Anemometer ii) Velometer
b) Measurement of humidity
i) Hygrometer ii) katathermometer
c) Measurement of following gases
i) Fire damp – flame safety lamp M. S. A. methonometer
ii) Carbone monoxide – co detector
d) Pressure survey -
Try to accompany the ventilation officer / supervisor at the time of measurement to see
the details of operation of equipment and the method of taking measurements.
Coal Dust Treatment
a) Study the stone dusting procedure
i) Type of stone dust being used, Specifications
ii) What are the places where it is used
iii) What quantities are used
iv) Method of spreading stone dust
v) Dusting plan
vi) Statutory requirements
b) Coal dust collection / cleaning and removal – sampling study sampling plan
i) Method of collection of samples
ii) Frequency of collection of sample
iii) Analysis done on coal sample
iv) Record of stone dusting and dust sampling
c) Water spraying for dust suppression
i) At faces
ii) At conveyor junction etc. layout of pipe line and pump for the purpose.
V) DRILLING AND BLASTING
A) Drilling
a) Name of drilling machine and its specification voltage rating, type of motor used, pilot
circuit for operation its importance.
b) Type of drill machine – rotatory or percussive
c) Type of drill rod, its length,
d) Arrangement for fixing drill bit
e) Type of drill bit,
f) Diameter of drill hole in mm.
g) Average time taken to drill one hole.

4. h) No. of holes drilled on face with size of face width x height.
B) Blasting
a) Name of explosive used - i) During development ii) During depillaring
b) Type of explosive used –
c) Weight of cartridge
d) Diameter of cartridge
e) Length of cartridge
f) Charge per hole
g) Total explosive charged in single face / single hole
h) Stemming material used –
i) Type of initiation – direct
j) Type of detonator used – its construction details and specification.
k) Study of following blasting tools.
i) Exploder – its name, type – magneto or battery condenser capacity in terms of round
it can blast at a time, operating details – direction of key
ii) Circuit tester for continuity
iii) Crimper
iv) Scraper
v) Crack detector
vi) Stemming rod
i) Powder factor
ii) Detonator factor
VI) MINE SUPPORTS
Study the different types of supports used , in the mine and collect the following
information regarding each type of support –
General Information
a) Name of support – prop / chock / cog / cross-bar / safari support / roof stitching / roof
bolting / friction prop / hydraulic prop / brick walling / any other type.
b) Type of support – permanent / semi permanent / temporary
c) Method of erecting each type of support.
d) Load bearing capacity of support – in case of hydraulic support i) Yield load and ii)
Setting load. Additional information to be collected in case of
i) Prop support – dimensions of lid, wedge, and base plate (if exit)
ii) Chock / cog support – dimensions of sleepers used, pressure releasing devise (if
installed)
iii) Roof bolting – type of roof bolt, depth of hole, if mortar (mixture of sand and cement )
is used sand : cement ratio.
e) Systematic support rules of the mine. – copy should be obtained.
f) Withdrawal of supports – study the various type of safety devices used in withdrawing
the support. Good sketches of all types of supports should be brought with dimensions
work with Limba Misty on the faces for few days.
VII) MINING MACHINERY
A) Transportation

5. a) General haulage system :- Rope haulage / belt conveyor
b) In case of rope haulage
i) Number of haulages
ii) Type of each haulages
iii) Capacity or rating of each haulage motor
c) Safety appliances used on each haulage like i) Stop block, ii) Run away switch, iii)drag
ect. – Sketches with dimension to be brought.
d) Signaling arrangement and code of signals
e) Other haulage feathers like i) Rerailer ii) Manholes iii) Tub arrester iv) Pullcord system
in case of conveyor. v) Roolers.
f) Type of haulage rope – no of strands, splicing of ropes
g) Surface tippler – its layouts, tipping arrangements
h) Track, crosses, sleepers, Track fillings. Method of laying track – work with track layer
for few days.
B) Pumping Arrangement
a) Type of different pumps used in the mines their i) Head, ii) H. P. – Study the Literature
available in mech. Department.
b) Electrical switches – detail.
c) Starting & stopping of pump.
d) Sketch general arrangement – starting from strainer / foot value, suction pipe, pump,
delivery pipe, delivery valve,
e) Arrangement for priming of the pump.
f) Sketch of tub with name of the parts & its capacity
g) Couplings, Sockets, clips etc used with haulage
h) No of tubs (loaded & empty) attached to different capacity haulage.
C) Shaft
In case shaft is the mode of entrance
a) No. of shafts
b) Finished diameter of each shaft.
c) Type of lining
d) Shape of shaft
e) Headgear – General construction
f) Type of head gear winding-
g) No. of cage
h) Various safety appliances like – i) Safety hook (type) ii) Automatic contrivance iii) Cage
arrester,
i) Construction and use of keps
j) Guides – type, and its use
VIII) SURFACE FEATURE
a) Study of lamp room layout – cap lamp,
b) Explosive Magazine – precautions taken to prevent pilferage of explosive
c) Store room – general procedure of issuing store material
d) Winding engine room
Draw sketch where ever necessary collect the Additional information where ever
necessary