History Flashcards
(22 cards)
Reported the early discoveries of chromite deposits in Ilocos Norte; Ambil Island, Mindoro; and Antique, Panay as well as the chromite-rich laterite deposits in Surigao.
Warren D. Smith
Chief of the Division of Mines of the Bureau of Soil from 1907 to 1914.
Warren D. Smith
the largest chromite deposit of the country was discovered along ______ about 24 km east of Masinloc
Lawis River
year chromite mining started
1934
first ore shipment from Floraine Mines in Lagonoy, Camarines Sur.
1935
marked a significant stir in chromite mining and production
1938
produced refractory chromite (>20% Al2O3 grade) from Masinloc, Zambales
Consolidated Mines, Inc. and Benguet Consolidated, Inc.
started shipment of its metallurgical grade chromite (>46% Cr2O3 at 3:1 Cr to Fe ratio)
Acoje Mine in Sta. Cruz, Zambales
Dinagat Chromite Mines and Tagobomar Development Company both in Dinagat Island, Surigao
1938
Mindanao Prospecting Association (Misamis Chromite) in Manticao
1938
Luzon Stevedoring Company in Opol, Misamis Oriental.
1938
During World War II, the Japanese occupational forces exploited some ___ chromite lenses in Acoje Mines, Zambales, producing _____ to ____ tons per day.
25; 80 to 120
In 1944, an estimated ______ MT of 48% Cr2O3 ore was shipped to Japan.
70,000
Increased demand for chromite production and consumption.
Post-war period
a definite fluctuating trend in the ore production
1958-1972
oversupply of chromite
1961-1964
brisk growth rate of the mining industry
1965 and 1966
upsurge in chrome production
1970
two-year lull in the ore production
1971-1972
highest value growth rate for chromite was registered
1973
chromite production fluctuated around a yearly average of about 500,000 MT
1974-1981
The foremost producers of refractory and metallurgical chromite are:
- Masinloc Chromite Operations (Benguet Corporation)
- Krominco, Inc. Heritage Resources
- Mining Corporation (formerly Alamag Processing Corporation and Rio Chico Mining Corporation) – the sole
producer of chemical grade chromite