The job duties of a project geologist involve working to assess a site and gather geological data for drilling, mining, or excavation operations. As a project geologist, you test the ground for composition, geological formations, and other factors such as evidence of seismic activity. Your responsibilities may include reporting your findings to the project management team, making recommendations for a safe and productive project, and supervising the staff. In some situations, you may perform geological mapping or exploration to find new sites that are conducive to the type of project that your employer carries out.