151956P.pdf   04/15/2016  Silgan Containers Corp.  v.  Sheet Metal Workers Intl.
   U.S. Court of Appeals Case No:  15-1956
   U.S. District Court for the Western District of Missouri - Kansas City   
   [PUBLISHED] [Benton, Author, with Murphy and Smith, Circuit Judges] 
   Civil case - Arbitration. The question of the validity and formation of a 
   labor contract was not within the scope of the parties' arbitration 
   agreement, and the district court did not err in vacating the arbitrator's 
   award because the arbitrator lacked authority to decide this issue; the 
   district court erred in granting the employer's motion for summary 
   judgment rescinding a provision of the agreement, as any mistake regarding 
   adoption of the contract provision was solely the result of the employer's 
   inattention or negligence and the mistake could not serve as the basis for 
   relief.