Mumbai: A minor fire erupted at the underground Metro 3 (Colaba-Bandra-SEEPZ) site on Tuesday afternoon. Hot metal dropping from welding work led to tarpaulin catching fire. According to Mumbai Metro Rail Corporation Nitrile Rubber Hoses Manufacturers (MMRC) the fire started at around 12 pm and was caused due to dropping of hot metal dropping during welding work. Two fire brigade vehicles, water tankers and police vans rushed to the spot soon after the fire call. The officials vacated the labourers and doused the fire. The 1. However, the Fire Brigade doused it immediately and no casualties were reported, said an official.According to the fire officials, it was a level one fire call and did not cause much damage.The incident happened at the construction site near T2 terminal of Sahar International Airport in Marol. No one was injured during the incident,” said a spokesperson from MMRC.The tarpaulin used to cover the TBM caught fire.Meanwhile, the tunnelling work at Marol will be completed first the MMRC had confirmed to this newspaper last week.. “There was a fire incident at T2 terminal TBM location.The tarpaulin used to cover the Tunnel Boring Machine (TBM) caught fire during the wielding work.2 km long tunnel which connects the airport will be ready by September 23.