DONKIN, N.S. -- A coal mine in Cape Breton has stopped production after a roof collapse in the same area where another rockfall occurred less than two weeks ago.

The provincial Labour Department says there were no injuries in either incident, but it has suspended work in the Kameron Collieries mine in Donkin, N.S., pending further study of what's causing the falls.

Scott Nauss, the province's senior director of inspection compliance, says the latest in the series of roof falls came while workers were in the mine on Thursday afternoon.

He says the fall occurred in an area "not far" from the last collapse on Feb. 2, in a portion of the underwater coal seam where "there are particular challenges."

Paul McEachern, a spokesman for Kameron Collieries, said there were 35 to 40 miners working on Thursday and some were "in the area of the event."

He says the miners noted the signs of stress in the rock, installed additional support to the roof and moved away from the area prior to the fall.