Short communication, Note

Physical effort in surface miners

H. Maver ; Higijensko epidemiološki odred Zagreb, Vojna pošta 1827, Zagreb
M. Kovačević ; Higijensko epidemiološki odred Zagreb, Vojna pošta 1827, Zagreb
Z. Grgić ; Higijensko epidemiološki odred Zagreb, Vojna pošta 1827, Zagreb

Abstract

A study of energy expenditure was carried out in a large iron ore mine. Twenty different work places were analysed. Energy expenditure was determined by standard methods, including the chronometry of work places and the determination of energy equivalents for specific operations by indirect calorimetry using the Müller spirometer for the sampling of expired air. The Scholender method was used for the analysis of oxide and carbon dioxide. Some energy equivalents proved very high, e. g. digging 8,4 cal/min, loading 7,02 cal/min, crushing 7,6 cal/min, unloading 9,7 cal/min. Like energy equivalents, the work calories in some places were high too, ranging from 1277 to 3162 calories; the total daily energy expenditure ranged from 3157 to 4956 calories. It is concluded that in surface mining there are work places which require heavy physical effort.

Keywords

Hrčak ID:

175427

URI

https://hrcak.srce.hr/175427

Publication date:

21.6.1969.

Article data in other languages: croatian

Visits: 1.095 *