Overview
Not being able to implement his invention in his home country, engineer Arrowsmith, the author of the patent for ore flotation, goes to the USSR to work at one of the flotation plants, where he soon learns that a group of Soviet engineers is conducting similar work.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 30 | September 22, 1972 (68) | |
 | - | - | |
 | 34 | January 3, 1974 (73) | |
 | 27 | October 21, 1973 (66) | |
 | - | - | |
 | 37 | December 24, 1976 (79) | |
 | 28 | August 17, 1978 (72) | |
 | 47 | May 13, 1955 (67) | |
 | 46 | May 2, 1972 (84) | |
 | 24 | July 16, 1942 (32) |