Seven migrant workers were crushed to death at a stone quarry in Bengaluru South taluk on 2 July after a massive boulder — dislodged by a JCB excavator operating at an adjacent upper quarry — rolled downhill and slammed into labourers working at the site below, Karnataka Police said on Thursday. The incident points to alleged negligence between two independently owned quarrying operations sharing the same hillside.

How the Tragedy Unfolded

The fatal incident took place at the Kaveri Crusher unit in Madapatna village, under the jurisdiction of Tavarekere Police Station. Central Zone Inspector General of Police (IGP) S. Girish, who visited the accident site, told reporters: 'There are two quarries at the location. The upper quarry belongs to one owner, while the lower quarry is owned by another. Work was underway at both sites early this morning. A JCB excavator operating at the upper quarry moved boulders, one of which rolled downhill and fell onto the workers at the quarry below.'

A total of 16 workers were present at the lower quarry when the boulder struck. Seven died on the spot, five were hospitalised — one in critical condition — and four managed to escape. The impact was so severe that several bodies were crushed beyond recognition, making identification difficult. A tractor, a tipper, and other heavy machinery at the site were also mangled by the force of the collapse.

The Deceased and the Injured

The seven workers killed have been identified as Ramu, Rajpal Singh, Satyanarayan Singh, Ram Avtar Singh, Rajendra Prasad, Nuhar, and Bhuvaneshwar Singh, all aged between their 30s and 40s, according to police. Most were migrant labourers from Madhya Pradesh, with one from Yadgir district in Karnataka and one injured worker from Chhattisgarh.

The son of one of the deceased recalled: 'I had worked the night shift and was about to go home when I received a call. My father had come to work at around 6.20 a.m. He was loading stones when the accident happened. My father's body was lying at the spot, and I was the one who took it away. My father had been working here for the past six months.'

Survivor Account: No Warning Was Given

Gopi, a worker from Tamil Nadu who narrowly escaped, alleged that workers at the upper quarry failed to alert those below before moving the boulders. 'Those working above should alert the workers below, but no one informed us. I have been working here for the past eight years. The workers above should always inform us before carrying out such operations,' he said. Gopi added that a stone struck him but he managed to run from the spot, and estimated that between 15 and 30 people were working at the site at the time.

Government Response and Investigation

Chief Minister D.K. Shivakumar, reacting to the incident at Vidhana Soudha, confirmed the deaths and said senior officers had visited the site. 'It has been ascertained that no blasting took place. I will receive a detailed report by this afternoon. It is yet to be determined whether the quarries were operating legally or illegally. The prescribed rules must be followed,' he said. Shivakumar added that compensation would be announced once complete details were available and that 'such incidents must never happen again.'

Authorities have launched a formal investigation to determine whether safety norms were violated and whether quarry operators can be held criminally liable. This comes amid longstanding concerns about the regulation of stone quarrying operations on the outskirts of Bengaluru, where rapid infrastructure demand has fuelled quarry expansion with, critics argue, inadequate safety oversight. Rescue and recovery operations were continuing at the site as of the time of reporting.