The Walney Dairy

The Walney Dairy (HM59A)

Location: Chantilly, VA 20151 Fairfax County
Country: United States of America

N 38° 51.68', W 77° 25.878'

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Anatomy of a Dairy

The Perfect Location

The Machen's chose this site to take advantage of the natural flow of the spring. Water was easily directed from the spring through the building and out the other side. As it passed through, the cold spring water preserved the milk and other products. The temperature inside the building remained fairly cool—about 50 degrees Fahrenheit—because of the water and surrounding ground.

Stone Construction

This building is made of local sandstone and probably had a wooden roof. Sandstone was in abundance at Walney, and it was more stable than wood which will not hold up to constant contact with soil and water. You can glimpse the stonemason's work at the top of the middle wall. He used two layers of stone and filled the spaces in between with smaller stones, or rubble. A mortar of lime and sand held it all together.

Work Rooms

The room on the right was for storing milk and making butter. Spring water collected in the brick vat and kept milk and cream containers cool. The water flowed around the outside of the room in the channels on the floor. Cheese was made in the room on the left. Here, water moved through the middle of the room and out through a hole in the base of the wall. The inside walls, troughs, and channels were parged. That means they were coated with a layer of mortar to make them waterproof and easy to wipe clean.
HM NumberHM59A
Placed ByEllanor C. Lawrence Park, Fairfax County Park Authority
Marker ConditionNo reports yet
Date Added Sunday, September 28th, 2014 at 6:53pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)18S E 289045 N 4304198
Decimal Degrees38.86133333, -77.43130000
Degrees and Decimal MinutesN 38° 51.68', W 77° 25.878'
Degrees, Minutes and Seconds38° 51' 40.80" N, 77° 25' 52.68" W
Driving DirectionsGoogle Maps
Area Code(s)703
Closest Postal AddressAt or near 6215 Creek Trail, Chantilly VA 20151, US
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