The Collaborative International Dictionary of English v.0.48:

Tinner \Tin"ner\, n.
   1. One who works in a tin mine.
      [1913 Webster]

   2. One who makes, or works in, tinware; a tinman.
      [1913 Webster]

WordNet (r) 3.0 (2006):

tinner
    n 1: someone who makes or repairs tinware [syn: tinsmith,
         tinner]