A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Underground Mine Communications (In Four Parts) 2. Paging Systems
This is one of four volumes on underground mine communications; this volume is a summary for mine operators, potential suppliers, and other parties, of the research, development, and the evaluation-demonstrations conducted by the Bureau of Mines under the Health and Safety Act of 1969 for the purpose of improving the means of notifying a person underground, who is away from his own phone, that he is being called.
Underground Mine Communications (In Four Parts) 2. Paging Systems
This is one of four volumes on underground mine communications; this volume is a summary for mine operators, potential suppliers, and other parties, of the research, development, and the evaluation-demonstrations conducted by the Bureau of Mines under the Health and Safety Act of 1969 for the purpose of improving the means of notifying a person underground, who is away from his own phone, that he is being called.
Underground Mine Communications (In Four Parts) 2. Paging Systems
1977
42 pages
Report
No indication
English