Coal India to install 25 oxygen generation plants in 22 hospitals The combined generation capacity of 20 plants will be a little above 12,700 litres per minute Coal India on Tuesday said it plans to install 25 oxygen generation plants in 22 hospitals across its subsidiaries at an investment of Rs 35 crore. The combined generation capacity of 20 plants will be a little above 12,700 litres per minute. Of the remaining five, four plants together will generate 750 cubic metres per hour and one will be a refill plant. Five of the plants are being installed at Coal India’s own hospitals with 332 beds. Northern Coalfields Limited and Central Coalfields Limited will be putting up two plants each and Bharat Coking Coal Limited, one plant. The remaining 20 plants will be installed in district hospitals under Coal India’s corporate social responsibility programme.