Various types of buckets are used as unloading facilities for raw material at unloading wharfs. Scissors type buckets, among them, has been being used widely because of their short cycle time and structural simplicity. However, the scooping capacity, especially for hardened remainder ore, of some buckets are unsatisfactory because of poor design concept of the buckets. In this study, the effects of the design parameters on the scooping performance of the buckets are investigated under kinematic and dynamic analysis. Further, the schemes and design guidelines for designing new scissors type buckets are also presented to improve ore scooping capacity for hardened remainder ore.