Ambrose v. Young, 474 F.3d 1070, 1078 (8th Cir. 2007) (“It is well-established in this circuit that ‘knowingly compelling an inmate to perform labor that is . . . dangerous to his or her life or health’ is a violation of the Eighth Amendment.”).
Sanchez v. Taggart, 144 F.3d 1154, 1156 (8th Cir. 1998) (“The Eighth Amendment’s prohibition against cruel and unusual punishment forbids knowingly compelling an inmate to perform labor that is beyond the inmate’s strength, dangerous to his or her life or health, or unduly painful.”).