CAMERON, Justice.
On 2 August 1979, defendant Mario David Marquez was convicted of a violation of A.R.S. § 13-1206, Dangerous or Deadly Assault By a Prisoner. On 29 August 1979, he was sentenced, in accordance with the mandatory sentencing provision of A.R.S. § 13-1206, to life in prison. Marquez now appeals both conviction and sentence. We have jurisdiction under A.R.S. § 13-4031.
The defendant raises these issues in his appeal:
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