UPDATE THURSDAY: Sniffer dogs have been used to combat drug use among industry workers in Gladstone for the first time.
Two people were charged in Operation Sweep, but police said the results indicated workers were for the most part doing the right thing.
Workers were met off a charter plane by three dogs from Brisbane on Thursday night, and greeted when they arrived at work on Curtis Island on Wednesday morning.
Gladstone police CIB detective senior sergeant Luke Peachey said police considered the outcome a "positive for industry".
One person was charged after he was allegedly found with about 1g of methamphetamine or cocaine, and a man was charged with possession of a dangerous drug after police searched the work camp.
Snr Sgt Peachey said police were showing a proactive approach.
"If you are working in Gladstone, and in possession of these drugs we will catch you and press charges against you," he said.
"We will look to do (more) in the very near future. We have had a very positive response from industry and the workers form the industry."
Snr Sgt Peachey said industry leaders would be pleased their workers appeared not to be working under the influence of dangerous drugs.
"We estimated nearly 2000 people went through the gates (on the island) and obviously it's positive for industry that number of people being searched and only charges against one," he said.
"The second one we specifically targeted individuals. Intelligence showed one of those persons was in possession of those drugs."
He said industry workers had not been aware of the operation until it began.
"We've done this off our own bat and gathered enough intelligence for us to do it," he said.
"Nobody was aware of what we were doing today and that's the way we like to do things."
It was the first time an operation like this had been used in Gladstone.
"Anytime we get the intelligence people are doing the wrong thing they now know we have the resources to do these sorts of things," Snr Sgt Peachey said.
"We will go away from this and see what worked well and what didn't work well," he said.
WEDNESDAY: Gladstone police have carried out a two-day operation searching for dangerous drugs, targeting industry workers.
Sniffer dogs from Brisbane were used at the Gladstone Airport to locate dangerous drugs on workers arriving in the region.
They also were used this morning at two sites on Curtis Island.
Two people have been charged with the possession of dangerous drugs at this stage.