Oxygen production needs to be augmented Updated: Updated: April 26, 2021 01:51 IST 20 metric tonnes of capacity is available in industries, but they lack licence to make medical oxygen Share Article AAA A worker fills medical oxygen cylinders to be transported to hospitals amid Covid-19 coronavirus pandemic at a facility on the outskirts of Chennai on April 24, 2021. | Photo Credit: AFP 20 metric tonnes of capacity is available in industries, but they lack licence to make medical oxygen Tamil Nadu’s current daily oxygen manufacturing capacity of 400 metric tonnes, though comfortable, should be augmented amid the surge in COVID-19 cases, according to industry. The State recently informed the Madras High Court that the current usage of oxygen was to the extent of 250 metric tonnes a day and that it had a storage capacity of 1,167 metric tonnes.