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Gate Designs for abandoned mines

 

Gates are designed around the threat to the particular habitat.
Here are some of Frontier's project designs:

 

 

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Adit Gate (1)
(Click on picture for larger view.)

 

Standard Adit Gates

Typical Bat Conservation International/American Cave Conservation Association bate gate installed in adits of any shape.
Adit Gate (2)

 

                        (Click on picture for larger view.)

 

This site consisted of unstable, fine grained powder. Anchoring a gate to this would be impossible. The solution was to install a six-foot concrete culvert in the opening and build a standard gate inside it.

Anchoring a gate on an ustable site
 

(Click on picture for larger view.)

 

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Shaft Gate Shaft Gates

Cupola bat gate installed over a shaft.
This particular site is a high vandalism-threat area so the bars are filled with concrete.

 

(Click on picture for larger view.)

 

Cupola gate installed over a six foot diameter shaft.

 

Cupola gate

 

(Click on picture for larger view.)

 

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High Security Gate

High Security Gates

Plug style bat gate used in high vandalism-threat areas or where the soil conditions require concrete reinforcement.

 

(Click on picture for larger view.)

 

 

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View-Shed Friendly Gates

  "Stealth" gate designed to minimize straight lines observable from certain directions. This makes the gate virtually invisible to the public or vandals throughout a given viewing area.
 

 

View-Shed Friendly Gate
 

(Click on picture for larger view.)

   

 

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Last updated: 5/1/2018
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