Strand Millas and Rock Spring

Listed on the National Register of Historic Places in 1973.

From the record

“Strand Millas and Rock Spring is a historic home located near Montchanin, New Castle County, Delaware. The name "Strand Millas" is derived from an industrial town near Belfast, Ireland.”
Wikipedia article Strand Millas and Rock Spring, CC BY-SA 4.0.

One of 411 National Register listings published here for New Castle County · listed in 1973 · category: Building.

Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

The listing

Address. Between Rockland and Montchanin off DE 100, Montchanin, 19710
When was it listed? July 1973
Category. building
Census division. Piedmont
National Register reference number. 73000520 - the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.

Fires near this property

2 since 2004

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 2 fires within 5 miles of Strand Millas and Rock Spring in 2004, burning about 1 acre in total. None started naturally. None was recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.

Reported cause	Fires
Missing data/not specified/undetermined	2

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

Date	Cause	Size	Reported by	Name on the report
20 November 2004	Missing data/not specified/undetermined	under an acre	Delaware State Fire Marshal's Office	not named
10 November 2004	Missing data/not specified/undetermined	under an acre	Delaware State Fire Marshal's Office	not named

Every fire recorded in New Castle County

Mines and quarries near this property

4 within 5 miles

Regional context, not property-specific evidence. The federal mineral resources record lists 4 workings within 5 miles of Strand Millas and Rock Spring: 2 plants, 1 past producer, 1 occurrence. 2 still produce. What was taken out: Chromium, Titanium, Fluorine-Fluorite, Mica. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Site	Commodity	Status
American Minerals/ Wilmington, De.	Chromium	Past Producer
Fairville Mica Occurrence	Mica	Occurrence
Wilmington Plant Dupont	Titanium	Plant
Wilmington Plantozark-Mahoning	Fluorine-Fluorite	Plant

Every working recorded in New Castle County

Map coverage status

No historic map-sheet match is published for this property yet. That does not mean no map exists. This record needs a coordinate-quality review before it can be joined to a sheet boundary. Browse the county's mapped places while that work is pending.

Listed places nearby

6 within 8 miles

Other National Register properties close enough to walk or drive between, ordered by distance from this one. Both positions come from the same geocoding pass that matched these properties to their map sheets.

Property	Distance	Listed
Montchanin Historic District	0.3 miles	1978
Rockland Historic District	0.6 miles	1972
Lower Louviers and Chicken Alley	0.8 miles	1972
Louviers	0.8 miles	1971
House at 901 Mt. Lebanon Rd.	0.8 miles	2017
Brandywine Powder Mills District	0.8 miles	1984

Sources for this property

National Archives record	The nomination case file for reference 73000520 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
New Castle County	All 411 listed properties in this county.

Provenance

Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.