** Mine Exploder T8 ( Johnny Walker ): Steel plungers on a pivot frame designed to pound on the ground.

** Steel square, also called a " framing " or " carpenter's " square, produces right angles

** Steel, basically a solution of carbon atoms in a crystalline matrix of iron atoms.

** An avalanche in Aliquippa, Pennsylvania kills 26, including Vulcan Crucible Steel Co heir-apparent Samuel A. Stafford Sr., when two 100 ton boulders fall on a bus filled with wartime steel workers on their way home.

** David Steel becomes leader of the UK's Liberal Party in the aftermath of the scandal which forced out Jeremy Thorpe.

** EEC joined with European Coal and Steel Community and European Atomic Community to form the European Communities ( from the 1980s usually known as European Community ).

** Steel production

** Real Steel ( 2011 )

** James Frost, Merchant Princes, Halifax's First Family of Finance, Ships and Steel, 2003, James Lorimer and Company.

** Steel bridge

** Steel is the most recycled product on Earth.

** Steel has voluntarily reduced energy consumption by 27 % since 1990.

** In 1998, the industry mapped out the technology path to achieving industry goals in the Steel Industry Technology Roadmap.

** Steel is North America's Number # 1 Recycled Material.

** Steel Pier – Book by David Thompson, lyrics by Fred Ebb, music by John Kander

** The Man of Steel ( comics ), a six-issue comic book limited series about Superman released in 1986 by DC Comics

** Superman: The Man of Steel ( video game ), a console video game for Microsoft's Xbox

** Superman: The Man of Steel, a monthly comic book series about Superman which ran from 1991 to 2003

** Steel ( John Henry Irons ), the third Steel in comics, also called " The Man of Steel "

** Man of Steel, Woman of Kleenex, an essay about Superman's sexuality by Larry Niven

** Man of Steel ( film ), a 2013 reboot of the Superman film series starring Henry Cavill

** Man of Steel ( musical ), an Australian comic musical based loosely on the story of Superman.

** Workers Memorial Day ( International )

** The Workers Party of South Korea is founded.

** In India, May 1 is declared as ' Maharashtra Divas ', i. e., Maharashtra Day ( also celebrated as ' Kaamgaar Divas ', i. e., Workers Day ).

** While working as a spy for the police, Adolf Hitler is ordered to monitor the German Workers Party.

** The United Farm Workers Organizing Committee ( UFWOC ), predecessor of the United Farm Workers of America ( UFW ), is formed.

** The Party of the Alliance of Youth, Workers and Farmers of Angola is founded in Luanda, Angola.

** The United Mine Workers of America is founded.

** The Polish United Workers ' Party votes to legalize Solidarity.

** César Chávez, American labor activist, United Farm Workers founder ( d. 1993 )

** ( Workers ' Party of Ethiopia ) 1984-1991

** Hungary ( Hungarian Working People's Party ) 1948-1956, ( Hungarian Socialist Workers ' Party ) 1956-1989

** North Vietnam ( Workers ' Party of Vietnam ) 1945-1976

** Poland ( Polish United Workers ' Party led the Patriotic Movement for National Rebirth ) 1948-1989

** ( National Socialist German Workers ' Party ) 1933-1945

** United Farm Workers headquarters

** Arbeiter-und Soldatenräte ( Workers ' and Soldiers ' Councils ) established throughout Germany, beginning in Kiel, during the German Revolution of November 1918, including Bremen, Braunschweig, Würzburg, Munich ( Bavarian Soviet Republic ( 1918 – 1919 )) and Alsace ( Alsace Soviet Republic ( 8 – 22 November 1918 )).

** Finnish Socialist Workers ' Republic ( January – April 1918 ) in the south of Finland only: Social Democratic Party of Finland.

** Communication Workers Union ( South Africa )

** Communication Workers Union ( Trinidad and Tobago )

** Communication Workers Union ( UK )

** Communication Workers Union of Australia

** French Confederation of Christian Workers

** Workers ' Force