Silph Co.

Zinc sits on 11F one tile north of the southeast corner, 6 tiles south of a Rocket Grunt.

Revive is hidden in the middle plant of three along 11F's south side, 8 tiles east and 1 north of a Rocket Grunt.

Master Ball is the Silph president's thank-you after Giovanni's defeat, given in his 11F office 2 tiles west of the Secretary.