UNDERGROUND MECHANICAL TUNNELING

Brand	Owner	Address	Description
R	ROBBINS COMPANY, THE	HAZEL AND SCHOOL STREETS ATTLEBORO MA	UNDERGROUND MECHANICAL TUNNELING, MINING AND DRILLING MACHINES AND PARTS THEREOF;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

An underground prospecting method and apparatus that utilizes the harmonics and fractional harmonic waves induced into the earth by the electric power grid. The data are converted to amplitude-depth and phase-depth data. The resulting data may be plotted and are compared to known patterns of the interested underground features, such as hydrocarbon, water, minerals and cavities, to identify whether the features exist and at what depth such underground features lie.