The WMS-1B Yellow Box Wireless Monitoring System has proven to be effective in preventing expensive gas line, water line and sewer line hits. It also has the potential to save lives if used for the necessary applications.
The WMS-1B was developed by Audio Supply to serve the Horizontal Underground Drilling Industry. It has been effectively used by hundreds of underground drilling and boring companies throughout the nation.
By monitoring the sound of the drill-head it is possible to identify when it meets an obstruction such as a sewer or gas line. This is done by placing a microphone in a nearby manhole to listen to the sound of the drill as it progresses. Many municipalities are now requiring that their local drilling companies employ the WMS-1B.