In FY20, against a target of 660 mt, Coal India achieved 600 mt, a shortfall of 60 mt. Now the target for FY21 is 710 mt, an increase of nearly 110 mt over previous fiscal.
Coal India is relying on 3 subsidiary companies, Northern Coalfields, South Eatern Coalfields and Mahanadi Coalfields for most of the increase in production.
It can definitely achieve this new target provided it concentrates on the following important aspects of opencast mining.
Overburden removal There has been also shortfall in OB (overburden) removal in all the three previous years. Coal India’s Opencast mine production accounts for more than 95 percent of its total output, and hence OB removal is extremely important to achieve the production target.
The overall coal:OB ratio of Coal India is approximately 1:2, which means nearly 1,420 million cubic metre of OB is to be removed to reach a target of 710 mt. With negligible OB removal in the last 3 years in spite of engaging a large number of hired machinery contractors, the production target appears difficult.
What needs to be done on overburden removal front
Improve availability and utilization of HEMM
There is poor availability and utilisation of departmental Heavy Earth Moving Machinery in Coal India with shovel and dumper availability between 60 percent to 40 percent and utilisation is 40 percent and 25 percent. The international figures are 70 percent to 80 percent. Even though CIL has about 6000 dumpers, availability impacted by poor maintenance and poor workers’ productivity. There is time loss due to diesel filling, shift maintenance and blasting period etc. On an average, a dumper works for hardly 9 hours a day if it is available. Even though a large number of HEMM hiring contractors are engaged now, the OB removal is hardly adequate to expose targeted coal
Haul road construction front
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