CONSTRUCTION PROJECT ASSISTANT – Mugo Gravel & Grading, Inc. ABOUT OUR COMPANY. Mugo Gravel & Grading, Inc. is a family- owned business in Concord, NC. Since 2004, we have enjoyed completing small to medium sized, local residential and commercial site projects and have made good and lasting friends along the way. We emphasize a strong focus on safety, family, teamwork, and mutual respect as we try to care for our employees and their families. We ...