http://salemwiki.info/index.php/Clay_Trough
Can you fill the trough with water 1st and then add lime directly to the trough afterwards... in the same way as brains into a bucket 1st or directly into the tanning tub if you wish?
And what about this:?
search.php?keywords=clay+trough&terms=all&author=&sc=1&sf=titleonly&sr=posts&sk=t&sd=d&st=0&ch=300&t=0&submit=Search