[645 C-E] Muir Mills Co. Ltt. v. Suti Mills , [1955] 1 S.C.R. 991; Shree Minakshi Mills Ltd. v. Their Workmen [1958] S.C.R. 878; and Standard Vacuum Refining Co. of India v. Its Workmen and Anr., [1961] 3 S.C.R. 536 relied on.