. Balloon logging in the Idaho Batholith : feasibility study. Logging Idaho Batholith (Idaho and Mont; ) Technological innovations; Balloons; Logging, Aerial Idaho Batholith (Idaho and Mont; ). ECONOMIC FEASIBILITY The balloon system has proven to be acceptable from an environmental viewpoint and also has demonstrated the physical capability to log in the Idaho Batholith area. The final test for a viable logging system is its economic feasibility. The balloon system's economic feasibility was tested under a specific set of timber stand, harvesting, and terrain conditions in the Idaho Batholith
. Balloon logging in the Idaho Batholith : feasibility study. Logging Idaho Batholith (Idaho and Mont; ) Technological innovations; Balloons; Logging, Aerial Idaho Batholith (Idaho and Mont; ). ECONOMIC FEASIBILITY The balloon system has proven to be acceptable from an environmental viewpoint and also has demonstrated the physical capability to log in the Idaho Batholith area. The final test for a viable logging system is its economic feasibility. The balloon system's economic feasibility was tested under a specific set of timber stand, harvesting, and terrain conditions in the Idaho Batholith. Unfortunately, balloon logging cannot be compared to conventional logging economics since these methods cannot be used to log terrain similar to the Anderson Creek site due to physical or environmental limitations. It is believed that this economic analysis will prove useful for assessing balloon logging feasibility for the Rocky Mountain area in general. The first step in the economic analysis was to plot production per hour versus time in days to see if a learning period could be identified during the startup of the system. Cumulative plots of turns per productive hour (fig. 13) and pieces per productive hour (fig. 14) were used because of the high variability in daily production rates. The slopes of the line segments on the graphs indicate that production rates were not time dependent. This is not surprising in view of the circumstances involved on this timber sale. Boise Cascade had sent the crews to another balloon logging job on the West Coast to be trained for the balloon system of logging. Operators were selected that had experience on similar equipment used for cable logging. Supervisory personnel from Bohemia Logging Company (a company with several years of experience with balloon logging) were on hand during the startup and initial shakedown of the DAYS Fig-ure 13.—Turns per productive hour (crumdative) vs. date, unit. 12. Please note that these images a
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