Tunnel Tigers

"A ... portrait of the off-beat characters who worked on the Scottish hydro projects, and of the tensions that were created when men of various religious and ethnic groups shared the same space. Tunnel tigers are an elite group of construction workers who specialise in a highly-paid but dangerous profession: driving tunnels through mountains or underneath rivers or other large bodies of water, in locations as far apart as Sydney and San Francisco ... Many of these daring men were born in north-west Donegal, Ireland, where the tunnel tigers were viewed as local folk heroes ... Patrick Campbell worked as a tunnel tiger for four years in Scotland"--Back cover.