Final answer:
The mining company can determine if mining activities are economically feasible by comparing the earnings from selling minerals to the total costs of land, equipment, labor, miscellaneous costs, and reclamation.
Step-by-step explanation:
The mining company can best decide whether mining activities in the location would be economically feasible by confirming that F is greater than A + B + C + D + E. This means that the earnings from selling the resulting mineral should be greater than the sum of the costs of land, equipment, labor, miscellaneous costs, and reclamation. If the earnings are greater than the total costs, then the mining activities would be economically feasible.