NOIDA: A group contractual worker of Yamaha Company in Surajpur on Friday protested demanding a decent revision of their salaries. The Company called police when the situation seemed going out of control.The workers pelted stones at police personnel in which Surajpur SHO and some other constables received minor injuries. The police used canes to disperse the mob.Suresh Kumar, a worker, said that there is inflation and price rise but the staffs in the company are under paid. “We worked hard and expected good revision. The company did not listen to our grievances. Some staffs got no hike while others got meager amount. The workers are not satisfied and hence protesting,” he said. The workers gathered outside the company in Surajpur and raised slogans.The company officials informed Surajpur police station. Praveen Kumar, SHO Surajpur police station, said that some contractual workers were unsatisfied with the revision of salary. “Angry protesters started pelting stones at the police personnel. Some police officials received minor injuries. We used mild force to disperse the protesters,” he said. A complaint has been registered against the protesters in Surajpur police station. The company officials refused to comment on the issue.