Sandhogs in an American original series on the History Channel. It has eleven episodes that focus on the people and the projects that maintain New York City's infrastructure, from the past to the present. They say, "For more than 150 years, a legendary band of mostly unknown urban miners has toiled in obscurity far below the streets of New York. They are the builders of water and sewage tunnels, subway systems and bridge footings, and underappreciated elements of the city's infrastructure.These urban miners create the tunnels that ensure the survival of the city above. Meet Walking Boss Morgan Curran and the Sandhogs of Local 147. Under great pressure, these men work to complete the Croton Filtration Plant, a facility that will help ensure the safety of the city's water supply. While the Brooklyn Bridge celebrates its 125th anniversary, the Sandhogs continue to toil below, preparing and detonating their next blast.