Tsu-Ming Han: Man of Two Different WorldsOver the centuries the Upper Peninsula has grown and developed due to many immigrants who arrived. Some of their stories are known but most have been lost to time. One of these stories belongs to Tsu Ming Han, a Chinese immigrant, a geologist and senior research laboratory scientist at Cleveland Cliffs Iron Company (now Cliffs Natural Resources). He came to the Upper Peninsula in the 1950s and was instrumental in the development of lower grade iron