Quarry and crusher unit operators in Kozhikode have begun an indefinite strike from January 26, citing the government's reluctance to address their demands, including the sanctioning of new units and a four-fold hike in fines for minor offenses. This strike is expected to stall National Highway widening works, as contractors report a shortage of essential materials. The action also threatens to impact the house construction sector and government housing schemes, with operators warning against relying on supplies from neighboring states due to potential tax losses.