panning

In mining, especially gold-mining, metal (gold) obtained in the process of panning. See pan, transitive verb, 1.

In tea manuf., treatment of the material in an iron vessel: in old Chinese practice, a light roasting of the leaf before and between rollings, now dispensed with in India

in making green tea, a steaming of the fresh leaf in its own juices to wither it for rolling

in Japan, same as pan-firing.

The act or process in which heavier ores are concentrated by agitating a sample of crushed ore under water in a shallow pan, thus washing away the lighter particles from the sample. See pan{1}, v. t. and pan{1}, v. i.

Present participle of pan.