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Bureau of Mines / Minerals yearbook: Area reports: domestic 1978-79
Year 1978-79, Volume 2 (1978-1979)

Krempasky, George T.
Hawaii,   pp. 157-162 PDF (600.6 KB)

Page 157

  157The Mineral Industry of 
This chapter has been prepared under a Memorandum of Understanding between
Bureau of Mines, U.S. Department of the Interior, and the Department of Land
Natural Resources of the State of Hawaii for collecting information on all
By George T. Krempasky1 
 Hawaii's nonfuel mineral production reached a record high, mainly as a result
of cement production. Nonfuel mineral production totaled $53 million in 1978
and $64 million in 1979. Use of mineral commodities—cement, stone,
sand and gravel, and pumice— was directly related to the construction
industry. Portland cement replaced stone as the leading value commodity produced,
reflecting an upsurge in ex-~ ports to west coast ports in response to mainland
 Cement was manufactured at two plants in Honolulu County. Pumice and volcanic
cinder was mined in Hawaii, Kauai, and Maui Counties. Sand and gravel was
mined in Hawaii, Kauai, and Maui Counties. Crushed stone was produced from
quarries in Hawaii, Honolulu, Kauai, and Maui Counties. Vermiculite imported
from Montana was exfoliated in Honolulu County. Gem stone material, black,
pink, and gold coral for use in making jewelry, was harvested from the waters
surrounding the Hawaiian Islands. 
 Pacific Concrete & Rock Co., Ltd., closed its rock quarry and ready-mix
facifity at Honokohau, near Kona. The company will continue supplying customers
from rock quarries at Waimanalo and Makakilo, and from its main concrete
facilities in the Sand Island area of Honolulu. 
 Ameron Honolulu Construction and Drayage, Ltd., was granted a 20-year exten
sion to its special-use permit for rock quarrying and processing at its Puunene
quarry in Maui County. The permit now includes 194 acres. 
 Ocean Minerals Co. of Mountain View, Calif., a consortium of Lockheed Missiles
and Space Co., Amoco Minerals Co., and two Dutch companies, announced that
its ship had successfully recovered manganese nodules in 17,000 feet of water
800 to 1,000 miles southeast of Hawaii. Nearly 1,000 tons were mined in a
continuous stream in the first successful test of a mining system at that
depth. Ocean Mining Associates (United States Steel Corp., Union Miniere,
S.A., and Sun Oil Co.), in its test program, successfully raised manganese
nodules from a 3-mile depth at design capacity of 50 tons per hour. Another
consortium of companies from Germany, Japan, the United States, and Canada,
operating as Ocean Management, Inc., announced it too had successfully demonstrated
continuous mining of nodules. Despite successful tests, mining of the sea
floor has been postponed until the Law of the Sea can be clarified. 
 The long-term effort to codify the Law of the Sea, at sessions of the Law
of the Sea Conference, has not materialized. The deep seabed mining issue,
including the right of private companies to engage in commercial production
of manganese nodules, has been a stumbling block. A deep sea mining bill
was introduced in the U.S. Congress. The 

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