Tag Archives: National Monument drainage

Trench Drain in the Black Hills

custom steel grates, national parks improvements, perforated grates

This summer, I had the opportunity to view more trench drain at various National Monuments. This time, I visited the Black Hills and viewed the trench drain marvels of Devil’s Tower and Mount Rushmore. Trench Drain at Mount Rushmore I went to Mount Rushmore 25 years ago on my way to Field Camp (to study […]