The Evolution of the Lock The use of locks, a means to raise or lower boats from one water level to another, dates back well over two thousand years. The first locks were known as flash locks. A small gate (the flash loc - Panama Canal locks - Document - PDFSEARCH.IO

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	The Evolution of the Lock The use of locks, a means to raise or lower boats from one water level to another, dates back well over two thousand years. The first locks were known as flash locks. A small gate (the flash loc Add to Reading List Document Date: 2014-02-22 07:34:34 Open Document File Size: 137,47 KB Share Result on Facebook City Milan / Kingston / Ottawa / / Continent North America / / Country Canada / / Currency USD / GBP / / Facility Bereguardo Canal / Tay Canal / Rideau Canal / Grand Canal / The canal / / NaturalFeature Cataraqui river / Heritage River / Upper Rideau Lake / Smiths Falls / Lawrence River / Rideau river / / Organization British army / United Nations Educational Scientific and Cultural Organization / / Person John By / Leonardo da Vinci / Bertola da Novato / Douglas Fir / / Position Colonel / canal engineer / engineer / / ProvinceOrState Ontario / / Technology flash / / URL www.rideaufriends.com / / SocialTag Newport Water Canals Rivers Rideau Canal Fourteen Locks Flash lock Panama Canal Locks Locks and weirs on the River Thames Water transport infrastructure

The Evolution of the Lock The use of locks, a means to raise or lower boats from one water level to another, dates back well over two thousand years. The first locks were known as flash locks. A small gate (the flash locAdd to Reading List