He trotted for maybe 5 min total; the rest of the time he was all out running. We saw no one else on this cool day so I also let him free run too.
Mile Marker 127.4
Round Top Cement Mill
When the C&O Canal was being dug in 1837, argillomagenisian limestone, a material well-suited for hydraulic cement, was discovered. George Shafer, who produced cement upstream, opened a cement mill in 1838 at the foot of Roundtop Hill. The mill provided cement for the remaining 60 miles of canal heading west to Cumberland. This mill even supplied cement for the Washington Monument, the Cabin John Bridge, and the U.S. Capitol. In 1863, the mill was sold and renamed the Round Top Hydraulic Cement Company. It quickly became one of Washington County’s most profitable businesses, providing jobs for 100 people during the Civil War. The mill was eventually put out of business by Portland cement, which was stronger and took longer to harden. The cement mill burnt and was rebuilt three times during its operation, including a fire in 1903 that greatly reduced the operation. Today the ruins of the mill and eight kilns, once powered by coal shipped downstream via canal boat, remain. (Source: www.canaltrust.org)
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