Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Minerals Yearbook, 1990: Connecticut
The value of nonfuel mineral production in 1990 was $117.9 million, a $4.7 million increase from that of 1989. Crushed stone and construction sand and gravel were the two leading mineral commodities produced. Other commodities produced included common clay, dimension stone, feldspar, industrial sand, and mica. In 1990, the value of total construction contracts, which relied heavily on mineral aggregates, was down 22% from that of 1989.
Minerals Yearbook, 1990: Connecticut
The value of nonfuel mineral production in 1990 was $117.9 million, a $4.7 million increase from that of 1989. Crushed stone and construction sand and gravel were the two leading mineral commodities produced. Other commodities produced included common clay, dimension stone, feldspar, industrial sand, and mica. In 1990, the value of total construction contracts, which relied heavily on mineral aggregates, was down 22% from that of 1989.
Minerals Yearbook, 1990: Connecticut
D. K. Harrison (Autor:in) / R. J. Altamura (Autor:in)
1992
12 pages
Report
Keine Angabe
Englisch
Minerals Yearbook, 1990: Maine
| NTIS | 1992
Minerals Yearbook 1990: Vermont
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Engineering Index Backfile | 1958
| TIBKAT | 1952
| TIBKAT | 1953