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Union of India - Section

Section 21 in The Marble Development And Conservation Rules, 2002

21. System of working.

(1)System of working in marble quarries shall be performed by formation of benches.
(2)Such benches in marble and overburden including weathered marble shall be formed separately and the benches in overburden or weathered marble shall be kept sufficiently in advance so that their working does not interfere with the working of marble.
(3)In order to ensure optimum production with minimum waste generation, every lease-holder shall endeavour to deploy machinery and equipment as indicated below:-
(a) For small quarry or mine (having area upto one hectare):    
  (i) Compressor ... one
  (ii) Jackhammer or any other pneumatic or hydraulic drill ... one
  (iii) Chain pulley block ... one
  (iv) Winch or 8 to 10 tonnes capacity crane ... one
  (v) Wedges, chisels and hammers as needed   ...
  (vi) Water pump ... one
(b) For medium size quarry or mine (having area above one hectareand upto three hectares):    
  (i) Compressors ... two
  (ii) Jackhammer or any other pneumatic or hydraulic drill ... as needed
  (iii) Mobile cranes (15 to 20 tonnes) ... one to two
  (iv) Derrick crane or Loader ... one
  (v) Excavator (0.3 cu.m. to 0.9 cu.m.) ... one
  (vi) Tippers or Loaders ... two
  (vii) Wire saws or chain saws ... as needed
  (viii) Hydraulic jacks ... as needed
(c) For large quarry or mine (having area more than threehectares):    
  (i) Compressors ... three to four
  (ii) Mobile cranes (15 to 20 tonnes) ... as needed
  (iii) Derrick crane (20 to 40 tonnes) or Loader ... as needed
  (iv) Excavator (0.9 cu.m. to 1.1 cu.m.) ... as needed
  (v) Tippers or Loaders excavator ... two for each
  (vi) Wagon drills    
  (vii) Slot liners ... as needed
  (viii) Line drilling machines    
  (ix) Diamond wire saws    
  (x) Chain saws or diamond belt saws    
  (xi) Hydraulic jacks    
(4)The State Government may, from time to time, notify scale of deployment of machinery indicated in clauses (a), (b) and (c) of sub-rule (3).