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Zircon, monazite and other minerals used in the production of chemical compounds employed in the manufacture of lighting apparatus (1916)

Pratt, Joseph Hyde, 1870-1942 · Raleigh, N.C. : Edwards & Broughton Printing Co. · leaf 64

An illustration from Zircon, monazite and other minerals used in the production of chemical compounds employed in the manufacture of lighting apparatus, 1916, leaf 64 — Heads i VZE2ZZZZZBZZ2ZZ. hn< 7ZZZZZZZZ2ZZZZZZZZZZZZZP Ore —■ TzzEZzzznzzmmnzMzzzL w;sa>;;s;\ … Tailings 2 n v wj/aj///y//sa//ja///a/// a/V/sasss/v//*/ zZXZZZZZZZZZZm H^dci3 EZZZZEZZZZ3 i A. Section of Edison type of magnetic separator. B. Section of the Heberli dry magnetic separator. ZIRCON, MONAZITE AND OTHER MINERALS 50 magnetic particles are held by the drum and carried a certain…

Rare earths · Lighting

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