Tin-mining.
1. (See quot.)
1674. Ray, Collect. Words, Prepar. Tin, 121. The dross and earth is carried all along the trough to a pit or vessel, into which the trough delivers it, called a loob.
2. pl. (See quots.)
1778. Pryce, Min. Cornub., 324. Loobs, tin slime or sludge of the after leavings, or leavings slime.
1860. Eng. & For. Mining Gloss. (Cornwall terms), Loobs, slime containing ore.