Nat'l Labor Relations Bd. v. Marshall Car Wheel

In N.L.R.B. v. Marshall Car Wheel Foundry Co., 218 F.2d 409, 411 (5th Cir. 1955) cited by respondents, the planned employee walkout held to be unprotected occurred at the moment molten iron was ready to be poured and this action "might well have resulted in substantial property damage" to the plant.