THE drugs operation was "sophisticated with potential high yield," the court heard.
Richard Witcombe, mitigating for Gordon, told Doncaster Crown Court: "The fox that set the hare running in this case was the arrest of Robert Cook."
He denied that Gordon was a "Mr Big" and claimed that other "most unsavoury" people were involved at a high level.
He claimed that "an opportunity presented itself and that happened to involve drugs".
Gordon did not live a "lavish lifestyle" and had a legitimate income at the time. There was no evidence of large financial gain.
Andrew Bailey, for Cook, claimed his client was a "stooge" who was used by others higher up the chain.
Cook claimed he did not take part in mixing or selling drugs at his home and acted as a warehouseman. He was caught red-handed with the cash.
Cook had a significant amphetamine addiction and had built up serious debts. He admitted his involvement in the conspiracy from a very early stage.
Craig Lowe, representing Smith, said the father-of-one had no previous convictions, had shown remorse, bitterly regretted his actions, acted out of character and was working for a fisheries company.
Charlotte Baines, for Munton, said the plant hire company worker was very remorseful and had suffered health problems.
Megan Rhys, for Murtagh, said the factory supervisor realised at a later stage but not at first that a cannabis factory was being created and he "turned a blind eye" by carrying on doing labouring work at the stables.
Murtagh, a father-of-three, was not involved in growing cannabis or the later conspiracy.
Richard Hackfath, representing O'Connor, said his client was on benefits and was in financial difficulties when he was offered the opportunity to earn a small amount of money for a day or two's work.
He "turned a blind eye" but had a limited role and bitterly regretted his behaviour.
Andrew Easteal, for Fletcher, said the used car trader was a heavy cocaine user at the time. His wife had since left him.
Judge Jacqueline Davies told the court: "It was a sophisticated operation with potential high yield."
Gordon was jailed for ten years and six months and Cook was locked up for four years and eight months.
Munton was jailed for three years and eight months.
Murtagh and O'Connor were each jailed for 16 months.
Fletcher was locked up for two years and eight months.
