Work has begun on a seismic survey ahead of controversial plans to store millions of tonnes of gas under the River Wyre.
And as part of that work, security personnel has been drafted in to keep guard of the area all day, every day.
Halite Energy does not have planning permission to store the gas at Preesall as it is waiting for the result of a judicial review over the planning inspectorate’s refusal to allow it.
But it is allowed to carry out a seismic survey, which involves a series of controlled explosions to test the nature of the bed rock.
People living around the test site said they noticed men in florescent jackets standing at junctions around the test area from Saturday.
June Jackson, a campaigner against Halite’s Plans, said: “These security people are positioned at most of the road junctions in the area. We’ve heard there will be 15 of them, working two shifts to cover 24/7 in all weather.
“It’s rather over the top and to be quite honest I feel sorry for these poor guys. It must be incredibly unpleasant.”
Halite says the security was requested by Tesla Exploration International Limited, which has been contracted to carry out the work.
A Halite spokesman said: “Up to 60 people will be working on site at various times. Tesla has set up a field office to continuously monitor the area and ensure the operation adheres to strict health and safety standards.”