─────────────────────────────────────────────────────────┬──────┬────── │ Per │ │ Day │Total ─────────────────────────────────────────────────────────┼──────┼────── Labor: │ │ 1 Operator at $150 per month │ $6.00│ 1 Assistant Operator at $120 per month │ 4.00│ 4 laborers at 4.00 per day │ 16.00│ │——————│ │ │$26.00 │ │ Fuel: │ │ 20 Gallons of gasoline at 28 cents │ 5.60│ 5.60 │ │ Miscellaneous: │ │ Oil, waste, etc. │ 1.20│ Repairs and maintenance │ 10.00│ Interest, 6 per cent on $10,000 for 150 days │ 4.00│ Depreciation, 200 working days per year and an 8 year │ │ life │ 11.11│ 26.31 │——————│—————— Total cost per day │ │$57.91 ─────────────────────────────────────────────────────────┴──────┴────── TABLE 51 COMPARISON OF COST OF HAND EXCAVATION AND MACHINE EXCAVATION WITH CONTINUOUS-BUCKET EXCAVATOR