Mudlark
From Tardis Wiki, the free Doctor Who reference
Mudlarks were people who scavenged for goods of value in [river]] mud. This was common in England during the Victorian era.
Thomas Brewster was a mudlark for Creek in 1867. (AUDIO: The Haunting of Thomas Brewster) Patsy was a mudlark in the 1890s. (AUDIO: Jago & Litefoot & Patsy)