Panaji/New Delhi: Rescuers on Saturday intensified their search operation near Cuddegal iron ore mine site in South Goa where three people are feared killed after a 'tailing stack' collapsed.

The incident occurred at the mine owned by Greater Ferromet, a Goa-based sister concern of Fomento Sociedade, in Sanvordem village at around 8.40 pm on Friday.

Incessant rains had slowed down the rescue operation which picked up pace this morning, said officials.

A Greater Ferromet spokesman said a dressing engineer, a security guard and worker were trapped inside a huge heap of aluminium and silica impurities extracted along with iron ore and hopes of they being alive are receding.

Seven persons have been pulled out alive till now, he said, adding the mishap took place at the treatment plant of the mine, where iron ore was being processed.

The tailing stack wall reportedly gave way due to the heavy rains lashing the Konkan region since the last three days. Eyewitnesses said the security check post situated below the wall got buried under the debris.

Goa Mining Department has initiated an inquiry into the incident. Chief Minister Digambar Kamat, who visited the site, said the Department will be submitting a report soon.

Satish Suri, Director General of Mines Safety, said, that they were monitoring the events in Goa.

"At present, rescue operation is going on. We will initiate an inquiry only after rescue work is over. The first priority is to get out the people who are trapped inside," he said.