Job ID : 498511. Conco Companies is a CRH company. Conco Companies is the leading ready-mix and crushed stone supplier in southwest Missouri and has been in business for over 70 years. Conco is also active in the trucking, cut-stone and quarry supply industries. With industry leading products and services, it is a great place to grow. If you’re up for a rewarding challenge, we invite you to take the first step and apply today. Position Overview. ...