Michael Martin was born in 1906 and passed away in July of 1972.  In 1940 he was working at the Jones Coal Corp. 
↑ U.S., Social Security Death Index, 1935-2014. Number: 198-05-7576; Issue State: Pennsylvania; Issue Date: Before 1951
↑ The National Archives in St. Louis, Missouri; St. Louis, Missouri; Draft Registration Cards for Pennsylvania, 10/16/1940 - 03/31/1947; Record Group: Records of the Selective Service System, 147; Box: 1582
"Pennsylvania, County Marriages, 1885-1950," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:KMZ3-Y45 : 16 January 2021), Winfred Martin and Sophie Vanagaitis, 11 Nov 1931; citing Marriage, Schuylkill, Pennsylvania, United States, multiple County Clerks, Pennsylvania.
"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:KQ75-ZB2 : 7 January 2021), Michael Martin, New Philadelphia, Schuylkill, Pennsylvania, United States; citing enumeration district (ED) 54-84, sheet 8B, line 69, family 136, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 3604.