Magnesium Casting Co. v. National Labor Relations Board
401 U.S. 137 · Decided February 23, 1971 · Supreme Court of the United States
Record summary. This page is generated from the Supreme Court Database’s coded data about the case. It describes who decided what, not the Court’s reasoning. Read the opinion itself before relying on it. Not legal advice.
At a glance
Magnesium Casting Co. v. National Labor Relations Board was decided on February 23, 1971 unanimously (9–0). The Court affirmed the lower court's decision. Justice William O. Douglas wrote the opinion of the Court. SCDB classifies its main issue as “Labor-management representative elections” in the Unions area.
Read the opinion
Case details
- Citations
- 401 U.S. 137 · 91 S. Ct. 599 · 27 L. Ed. 2d 735 · 1971 U.S. LEXIS 138
- Docket number
- 370
- Decided
- February 23, 1971
- Argued
- January 18, 1971
- Court era
- Burger Court
- Decision type
- Opinion of the Court (orally argued)
- Disposition
- Affirmed
- Outcome for petitioner
- The petitioning party did not receive a favorable disposition
- Vote
- 9–0 (unanimous)
- Majority opinion
- William O. Douglas
- Opinion assigned by
- Warren E. Burger
- How the case arrived
- Certiorari
- Issue (SCDB)
- Labor-management representative elections
- Issue area
- Unions
- Legal provision
- National Labor Relations Act
- Type of law
- Federal statute
- Decision direction (SCDB)
- Liberal what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice Hugo L. Black | Majority | |
| Justice William O. Douglas | Majority | Wrote an opinion |
| Justice John M. Harlan II | Majority | |
| Justice William J. Brennan Jr. | Majority | |
| Justice Potter Stewart | Majority | |
| Justice Byron R. White | Majority | |
| Justice Thurgood Marshall | Majority | |
| Chief Justice Warren E. Burger | Majority | |
| Justice Harry A. Blackmun | Majority |
Full case caption
Magnesium Casting Co. v. National Labor Relations Board
SCDB identifiers: case 1970-039, docket 1970-039-01.
Related decisions
Other cases on “Labor-management representative elections”
- National Labor Relations Board v. Natural Gas Utility District of Hawkins County
- National Labor Relations Board v. Raytheon Co.
- National Labor Relations Board v. Savair Manufacturing Co.
- Boire v. Greyhound Corporation
- National Labor Relations Board v. Exchange Parts Co.
- McCulloch v. Sociedad Nacional de Marineros de Honduras
Cases on the same legal provision: National Labor Relations Act
- National Labor Relations Board v. Local 825
- Amalgamated Association of Street v. Lockridge
- National Labor Relations Board v. Plasterers' Local Union No. 79
- Allied Chemical & Alkali Workers of America v. Pittsburgh Plate Glass Co.
- International Longshoremen's Association v. Ariadne Shipping Co., Ltd.
- H. K. Porter Co., Inc. v. National Labor Relations Board
Same Term, same area (Unions)
- National Labor Relations Board v. Local 825
- International Brotherhood of Boilermakers v. Hardeman
- Ramsey v. United Mine Workers of America
- Chicago & North Western Railway Co. v. United Transportation Union
- National Labor Relations Board v. Natural Gas Utility District of Hawkins County
- Amalgamated Association of Street v. Lockridge
Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error