Follows certain rules like
While doing the anchor replacement SCI uses the MGB (Mahatma Gandhi Bolts) made up of V2A steel.
MGBs are newer and superior bolts made of material tested for their breaking strength of above 3000kg.
These bolts are 18mm wide and 90mm long compared to tiny little bolts which are currently in use.
Life of these bolts is predicted to be approx. 50 yrs.
Using the Fischer Chemical hardener, bolts could be fixed in merely 10 minutes in the rock.
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