Colorado Mining paid $600,000 to acquire a mine with 40,000 tons of coal reserves. The following statements model reflects Colorado Mining’s financial condition just prior to purchasing the coal reserves. The company extracted 15,000 tons of coal in Year 1 and 18,000 tons in Year 2. Assets = Equity Rev. – Exp. = Net Inc. Cash Flow Cash + Coal Res. = Com. Stk. + Ret. Earn. 800,000 + NA = 800,000 + NA NA – NA = NA NA Required a. Compute the depletion charge per unit. b. Record the acquisition of the coal reserves and the depletion expense for years 1 and 2 in a financial statements model like the preceding one. c. Prepare the general journal entries to record the depletion expense for years 1 and 2.

Problem 3: access control pokeygram, a cutting-edge new email start-up, is setting up building access for its employees. there are two types of employees: managers and engineers, and there are three departments: security, networking, and human resoures. each employee works in a single department, and each department is housed on a different floor. managers are allowed access to any floor, while engineers are allowed access only to their own floor. there are three badge-operated elevators, each going up to only one distinct floor. every employee has one badge. pokeygram wants to use the best possible access control method in order to minimize delay for the elevators (a) access control matrix, 1. which of the following would you recommend that pokeygram use: (b) access control lists, or (c) capabilities? make sure to justify your answer. 2. what, if any, would be the benefits (and/or disadvantages) of using rbac (role-based access control) in this situation? keep your solution for this problem limited to 10-12 lines of text.