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Over time, manhole covers may become difficult to remove due to exposure to the elements and traffic. This is because debris fills in voids and deformation of the casting occurs with the impact of NYC traffic. Asphalt and debris from road work will fill the notches where manhole hooks are to be placed for cover removal. If those notches are not cleaned out properly, or are shallow, it is common for manhole hooks to disengage suddenly when pulling. It is recommended to pull manhole covers away from traffic. This cannot always be done due to limited space. If covers must be pulled in the direction of traffic, employees MUST be aware and look for oncoming traffic to avoid serious injury or fatality.
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