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United Mine Workers of America v. Gibbs

383 U.S. 715 · Decided March 28, 1966 · 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

United Mine Workers of America v. Gibbs was decided on March 28, 1966 unanimously (8–0). The Court reversed the lower court's decision. Justice William J. Brennan Jr. wrote the opinion of the Court. SCDB classifies its main issue as “Ancillary or pendent jurisdiction” in the Judicial Power area.

Read the opinion

Case details

Citations
383 U.S. 715 · 86 S. Ct. 1130 · 16 L. Ed. 2d 218 · 1966 U.S. LEXIS 2837
Docket number
243
Decided
March 28, 1966
Argued
January 20, 1966
Court era
Warren Court
Decision type
Opinion of the Court (orally argued)
Disposition
Reversed
Outcome for petitioner
The petitioning party received a favorable disposition
Vote
8–0 (unanimous)
Majority opinion
William J. Brennan Jr.
Opinion assigned by
Hugo L. Black
How the case arrived
Certiorari
Issue area
Judicial Power
Decision direction (SCDB)
Liberal what this means

How the Justices voted

JusticeVoteSeparate writing
Justice Hugo L. BlackMajority
Justice William O. DouglasMajority
Justice Tom C. ClarkSpecial concurrence
Justice John M. Harlan IISpecial concurrenceWrote an opinion
Justice William J. Brennan Jr.MajorityWrote an opinion
Justice Potter StewartMajority
Justice Byron R. WhiteMajority
Justice Abe FortasMajority

Did not participate: Earl Warren.

Full case caption

United Mine Workers of America v. Gibbs

SCDB identifiers: case 1965-082, docket 1965-082-01.

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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