I am doing some work on a mercury mine that has a surviving 24-ton Scotts furnace.  I know these were commonly used in nineteenth century quicksilver mines, what I don't know is how many of these survive.  It was common practice to retort the mercury saturated furnace bricks when the mining was done.  Does anyone know if this means that many of these furnaces were largely dismantled and few survive or if only portions of the furnace was dismantled.  I am looking for information on other surviving examples and archaeological or historic architectural work that was done on sites with Scott Furnaces.

Thanks,
Hannah Ballard
Pacific Legacy, Inc.