Blarney Castle Oil & Propane will host March 13 Business After Hours at Shay's Chop House in Onekama from 5:30 pm- 7:30 pm.  Business After Hours is the premier networking event for business professionals designed to help you make valuable business contacts, entertain clients and share ideas.  Here’s a casual networking opportunity that is ideal for meeting fellow professionals and establishing long-lasting business relationships.   It is a relationship-building experience held in a relaxed setting that benefits you and your company through added contacts and resources. Business After Hours is a monthly event presented by the Manistee Area Chamber of Commerce.  The public is welcome and admission is $5 for members and $10 for non-members.