Pleasant Plains Historical Society In an effort to re-connect to its historical roots, the Pleasant Plains Historical Society was created by mayor Jim Verkuilan and his friends in 2009. Its stated purpose is âTo acquire, restore and maintain historical sites surrounding the community.â
Bumping a Lock. 1  1. Insert the key into the lock. Fit the key into the lock. 2  2. Begin turning the key. Try turning the key in the unlock direction (usually counterclockwise). 3  3. Strike the back of the key with a blunt object.
Bump testing refers to a functional test of the device to verify calibration. This is. accomplished by exposing the device to a known concentration of test gas. Please note that a Bump Test does not Calibrate the device. Calibration is. recommended every 180 days to ensure the device will accurately respond to H2S gas.