Montgomery Building & Construction Trades Council v. Ledbetter Erection Company

Mr. Herbert S. Thatcher, Washington, D.C., for petitioners.

Mr. Jack Crenshaw, Montgomery, Ala., for respondent.

Mr. Mozart G. Ratner, Washington, D.C., for N.L.R.B., amicus curiae by special leave of Court.

Mr. Justice MINTON delivered the opinion of the Court.