A tin filled with tin ore is used in Recruitment Drive during the Miss Cheevers challenge. It is one of the 9 stages of tins used during the quest. The tin with a key impression filled with tin ore is created by filling the tin with a key impression with tin ore powder. It should then be used with cupric ore powder to create the tin (tin and copper). This continues the plaster cast for the bronze key needed to complete the challenge. Using the wrong ingredients can result in a useless tin (strange).