This learning activity packet (LAP) outlines the study activities and performance tasks covered in a related curriculum guide on milling machines. The course of study in this LAP is intended to help students learn to set up and operate a vertical mill. Tasks addressed in the LAP include mounting and removing cutters and cutter holders for vertical spindle machines; using machine controls properly; mounting and aligning a vise; aligning a head square to a table; performing side and end milling operations; milling a key seat with a keyseat cutter and a key slot with an end mill; milling a rectangular pocket; performing precision locating, drilling, and reaming of holes; aligning a bore concentric to the spindle; performing a boring operation; and performing drilling and milling operations using a dividing head. Included in the LAP are unit and specific objectives, a pretest, information and assignment sheets, cross-references to the curriculum guide, job sheets, and answers to the pretest and the assignment sheets. Page numbers in the LAP are coordinated with those in the curriculum guide. (MN)