Keywords: Peirce Mill Millstones in place.jpg en A look at the millstones ready to grind grain in Peirce Mill Rock Creek Park Washington DC Note the long beam at the top connected to the vertical wooden beam used to open the sluice outside and also on the left the wooden pedestals with cranks to adjust the height of the millstones The Peirce Barn is just visible outside through the window Note also the large electrical box in the background An electric motor pumps the water to run the water wheel Originally of course Peirce Mill ran off of water impounded from a dam across Rock Creek but does not now own Bonnachoven Peirce Mill Flour mill machines Cc-zero |