hearth roasting

hearth roasting

[′härth ‚rōst·iŋ]
(mining engineering)
A process in which ore or concentrate enters at the top of a multiple hearth roaster and drops from hearth until it is discharged at the bottom.
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References in periodicals archive ?
We will be using natural cooking methods at Seasons 52," said Chef Pleau, "that include open fire oak and mesquite grilling, and stone hearth roasting.