- Defendant hooked up the victim to a "cat line" used to lift large pipes on a gas drilling rig. The "cat line's" slack got stuck and dragged the victim until he hit the "Kelly" bushing, where he was spun around and died.
- Held: The difference between involuntary manslaughter and criminally negligent homicide is awareness of the risk.
- For involuntary manslaughter, the defendant is aware but consciously disregards a substantial and unjustifiable risk that the death will occur.
For criminally negligence: the defendant is not aware of the same risk but a reasonable person would have been. Criminally negligent homicide is a lesser included crime of involuntary manslaughter because the mens rea
for criminally negligent homicide is less culpable than for involuntary manslaughter, but the actus reus
of both homicides are the same (voluntary act, causation, death results).