Do Not Migrate
Turning Point

Turning Point

NCPTT’s research on air pollution was recently featured in a publication by the National Parks Conservation Alliance. National Parks at a Turning Point focuses on air pollution effects in the National Parks and highlights what the National Park Service is doing about it.

This report featured NCPTT’s research efforts to protect our nation’s heritage from the elements through effective cleaning and restoration methods. The complete report can be downloaded at

For more information contact Mary Striegel.

National Center for Preservation Technology and Training
645 University Parkway
Natchitoches, LA 71457

Email: ncptt[at]
Phone: (318) 356-7444
Fax: (318) 356-9119