"They want to be assured of uninterrupted gas supply, standard pressure and availability of quality coal before going into the final round of negotiations," said a meeting source.

The Tata representatives also discussed with the Petrobangla officials infrastructure facilities including necessary gas pipeline development for the proposed US$2.5 billion industrial units in the country.

"The Tata team has placed their requirements during the talks. The negotiations are still open and we are now calculating the supply and demand position," SR Osmani, chairman of Petrobangla, told reporters after the meeting.

They wanted to know about the country's reserve and supply position of coal and gas for the projects, the chairman added.

Tata Steel Bangladesh Project Chief Indronil Sengupta said wholesale calculations regarding demand and supply of coal and gas and other infrastutural facilities are going in both the sides.

"During the talks, we placed our demands while the Bangladesh government informed us of their capacity to supply coal and gas to the Tata projects," Sengupta said.

Led by Manzer Hussain, Tata Bangladesh chapter's head, Sanjay Gattani, Sreekanth, Suresh Nagarajan, Markand Desai, Alan Rosling, Sukran Singh, and Bharat Vasani were among the Tata officials who participated in the meeting.

The team will sit down again with the Bangladesh government's negotiation committee headed by Finance Secretary Zakir Ahmed Khan on Saturday morning.

Sources said the talks will continue until August 31 with a view to inking the final investment contract by November this year.

The Bangladesh government had formed four teams for handling the matters relating to the negotiations with Tata Group, the century old corporate house.

The negotiations committee on the other hand has formed several sub-committees to hold sector wise talks with the Indian industrial major.

The Tata Group on April 20 submitted a formal proposal to the government for investing $2.5 billion in setting up a 1000 mw power station, a steel mill with an annual capacity of 420,000 tonnes, and a one million-ton fertiliser unit.