MANCHESTER, N.H. (AP) – Health officials say Public Service Company of New Hampshire workers are in no danger after installing a utility pole at a former mill site where there was an anthrax outbreak in 1957.

Workers became concerned after digging in the area of the demolished Arms Textile Mill in Manchester.

The Centers for Disease Control documented 149 cases of anthrax at the mill between 1941 and 1966, with five or six deaths blamed on respiratory anthrax.

The mill was closed in 1968, and the buildings were decontaminated and later destroyed.

Health officials say 12 soil samples found no sign of anthrax. A 13th detected some evidence, but city Public Health Director Fred Rusczek said there was no cause for concern because the level was low so as to not be harmful to humans.