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Lake Bernard Frank (also Lake Frank), is a 54-acre (220,000 m 2) reservoir on the North Branch of Rock Creek in Derwood, Maryland, U.S., just east of Rockville.In the late 1960s it was renamed after Bernard Frank, a wilderness activist and a co-founder of The Wilderness Society. [2]
Clark and McCormack Quarry and House, Rockville, Minnesota, NRHP-listed. Established in 1907, was the source of Rockville Pink granite. Grand Meadow Quarry Archeological District, Grand Meadow, Minnesota, NRHP-listed. Site of pre-historic chert mining. Jasper Stone Company and Quarry, Jasper, Minnesota, NRHP-listed.
This is a list of Superfund sites in Maryland designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) environmental law.The CERCLA federal law of 1980 authorized the United States Environmental Protection Agency (EPA) to create a list of polluted locations requiring a long-term response to clean up hazardous material contaminations. [1]
The quarry was the source of stone for two Potomac River canals: the Patowmack Canal (opened in 1802, and officially known as the Great Falls Skirting Canal) on the Virginia side of Great Falls; and the C&O Canal, having supplied red sandstone for the latter for locks 9, 11, 15 - 27, and 30, the accompanying lock houses, and Aqueduct No. 1 ...
Tumbled specimens of Patuxent River Stone Maryland Agate cut and Illuminated. The Patuxent River stone is the state gem (a form of agate) of the U.S. state of Maryland. Since it is found in red and orange this stone could also be referred to as carnelian. [1] It is found only in Maryland, and its colors reflect the Maryland state flag.
Rockville is a city in and the county seat of Montgomery County, Maryland, United States, and is part of the Washington metropolitan area.The 2020 census tabulated Rockville's population at 67,117, [5] making it the fourth-largest incorporated city in Maryland.