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2. Gestation crate - Wikipedia

   en.wikipedia.org/wiki/Gestation_crate

   A gestation crate, also known as a sow stall, is a metal enclosure in which a farmed sow used for breeding may be kept during pregnancy. [ 1 ] [ 2 ] [ 3 ] A standard crate measures 6.6 ft x 2.0 ft (2 m x 60 cm).

3. Access mat - Wikipedia

   en.wikipedia.org/wiki/Access_mat

   Mud mats are a combination of a reinforced member (such as metal bars or bamboo) confining geosynthetic fabric in a portable mat, that can be rolled up for ease of transport and deployment. A lightweight, light-duty flexible mat suitable for distributing loads over firm ground to avoid rutting. They are not commonly used for access matting in ...

4. Shed - Wikipedia

   en.wikipedia.org/wiki/Shed

   In cold climates, metal sheds with thin walls need to have snow and ice cleared from the roof, because the thin metal may be damaged by a heavy accumulation. Since thin metal sheds weigh much less than wood or PVC plastic sheds, thin metal sheds are more at risk of being damaged by heavy winds. To prevent wind damage, thin metal sheds should be ...

5. Nissen hut - Wikipedia

   en.wikipedia.org/wiki/Nissen_hut

   Production of Nissen huts waned between the wars, but was revived in 1939. Nissen Buildings Ltd. waived its patent rights for wartime production during the Second World War (1939–45). Similar-shaped hut types were developed as well, notably the larger Romney hut in the UK and the Quonset hut in the United States. All types were mass-produced ...

6. Interlocking - Wikipedia

   en.wikipedia.org/wiki/Interlocking

   An interlocking system is designed so that it is impossible to display a signal to proceed unless the route to be used is proven safe. Interlocking is a safety measure designed to prevent signals and points/switches from being changed in an improper sequence. For example, interlocking would prevent a signal from being changed to indicate a ...

7. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!