Proctor Maple Research Center - Underhill Center - Vermont
Recent Publications
- One or Two Tapholes
- Chemical Composition of Scale
- Sustainable Tapping Guidelines
- Tubing Cleaning - Methods Used in the U.S.
- High Vacuum in Gravity Tubing
- Tubing System Age and Sap Yield
- Estimating Twig Starch
- Leader Check-Valve Adapters
- Tubing System Aging
- Sap and Vacuum Dynamics
- UVM PMRC Survey - all respondents
- UVM PMRC Survey - respondents who used CV adapters
- Antimicrobial Silver in Maple Sap Collection
- Check-Valve Spout Adapter
- Wilmot columns from Farming Magazine
The Sumner Hill Williams Sugarhouse
Most of the sugaring activity is centered around the Sumner
Hill Williams Sugarhouse, designed and built in 1992-1993 by sugaring operations
manager, Sumner Williams, with the assistance of PMRC staff and volunteers and
with donations of materials and services of a number of local companies and
individuals. The sugarhouse was expanded in 1999 to accommodate an expanding
educational program sponsored by Husky Injection Molding of Milton, Vermont. The
building was named for Sumner in April 2000 after an accident claimed his life
in October 1999.
More Pictures
Last modified January 02 2008 11:45 AM



