A prober of silences, Sante writes about the tens of thousands of anonymous men, many of them immigrants and African Americans, who toiled on these projects, often living in hastily constructed settlements, leaving few traces.

While announcing the acquisition, which will maintain Tile as an independent entity led by current CEO CJ Prober, Hulls described plans for the companies to connect Tile accounts to the Life360 app.

Under the deal Monday, the companies said that Tile will continue under its own brand identity under the leadership of Tile CEO CJ Prober, who will also join the Life360 board of directors.

She’s a prober, but not a heavy-handed one.

CJ Prober, Tile’s chief executive, said last week that Apple had refused to give his company access to the iPhone’s ultrawideband chip to make its own trackers that work with it.