This rigging is intended to guide the machine in any direction ... When bricks are used in theconstructionof the sewer or tunnel, the lower half of the inside shell can be THE Newark Fil- teri ...
Metrowater used 687 sewer machines to desilt nearly 2,436 machine holes in 683 streets to prevent sewer blocks. About 1,990 Metrowater workers were engaged in cleaning the sewer network for a ...
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