Third generation coal miner Russell Robertson was the only Queensland Labor candidate to have signed the pledge at the time of publication.
When interviewed,Mr Robertson - who is running in the ultra-marginal seat of Capricornia,held by Liberal National MP Michelle Landry - steered carefully around the topic of Adani's planned Carmichael mine.
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He emphasised that there were"six other projects"in the Galilee basin that could provide coal jobs to workers in North Queensland.
"I'm going to do my best to make sure every one of those six projects get up and running,"Mr Robertson said.
"I don't buy into the fake coal war of the LNP. That's a real scare campaign,"he said of suggestions Labor was split over mining.
Labor has expressed scepticism over the Adani project,saying it should not receive public funding and must stack up financially and environmentally.