BARJORA (BANKURA): Desperate to salvage Bengal ’s battered industry image , chief minister Mamata Banerjee on Friday issued her most stern diktat yet against militant trade unionism . “I will not tolerate sit-in demonstrations in front of factory gates. No organization can politicize worker agitations to establish its base,” the CM said while inaugurating a Rs 200 crore expansion unit of SK Birla Group’s Expro India at Bhutgaria in Bankura.Condemning the politics of industrial closures, Mamata said: “Large industries like this create jobs and bring in ancillary units. Man-days must not be lost in the name of trade unionism.”Mamata’s remarks are aimed at sending positive vibes to the industry ahead of her Singapore trip, as much as they are meant to rein in rogue union leaders. The Trinamool chief’s tough stand comes in the wake of a string of staggering blows to Bengal’s industry — the murder of a jute mill CEO that triggered suspension of work at several mills, closure of Hindustan Motors’ Uttarpara plant, suspension of work at Jessop’s and union trouble at ECL mines and Shyam SEL to name a few. Trinamool’s trade arm INTTUC was blamed in many of these incidents.Alleged INTTUC henchmen were accused of attacking and threatening officials of Shyam SEL and ECL. The tough stand taken by both managements — ECL even warned of closing a mine in four days — forced police to arrest the main accused in both cases although they walked out on bail after a night in custody.Mamata, however, continues to claim that things are looking up on the industrial front. Flanked by Bankura’s newly-elected Trinamool MP, actor moon Moon Sen, and zilla sabhadhipati Arup Chakraborty, the CM declared she would not tolerate “untoward incidents in any industry”. “The situation has become investment-friendly in our state after our government came to power and I will not allow industries to be shut down,” Mamata said.The CM laid the foundation stone of the 18.32km Borjora-Maliara-Durlovpur-Mejia industrial corridor, which is expected to cost Rs 75 crore. “Huge investments will come here once the industrial corridor is complete,” Mamata said after laying foundation stones of projects worth Rs 300 crore, including a superspecality hospital, a dam, a solar park and a motel at Mukutmanipur.