Statement
Should India immediately stop digging coal from its mines?
Arguments
I. Yes the present stock of coal will not last long if we continue mining at the present rate.
II. No, we do not have alternate energy resources in sufficient quantity.
III. No this will put millions of people at a disadvantage and their lives will get adversely and also the industry.

II and III are strong. As the reserves of coal are limited, yet for stopping its use, alternate source of energy have to be discovered. This is the solution to conserve it. Hence, first argument is not strong.
It is true that till date we have been not able to harness a renewable source of energy and substitute the coal. Also, stopping coal mining would surely throw the engaged workers out of employment.