TRICO Companies, LLC has hired Joel Conijn as civil project manager and Joe Wittman as superintendent. Conijn has eight years of experience in civil construction, working on projects for multiple state agencies and private clients. He holds a bachelor’s degree in civil engineering from Washington State University and is a registered Professional Engineer in South Carolina and Washington. Wittman has over 30 years of construction experience, initially working in residential construction and then moving to commercial construction, including tenant improvements, steel building erection and mixed-use buildings.