EL GRANDE INDUSTRIES HAS WORKED WITH THE FOLLOWING AUTHORITIES ON VARIOUS PROJECTS:
- Redevelopment Authority of the County of Washington
- Redevelopment Authority City of Uniontown
- Redevelopment Authority City of Conellsville
- Redevelopment Authority of the County of Fayette
- Greene County Housing Authority
- Washington County Housing Authority
- Fayette Area Coordinated Transportation (FACT)
- Municipal Authority of Robinson Township
- Mon Valley Sewage Authority
- Municipal Authority City of Monongahela
- Municipal Authority Township of Washington