ABC finish construction of coal mine in Melbourne on 1 Jan 2021. The total cost of coal mine was $350 million. The useful life of the coal mine is linked to the 20 year mining tights granted to the company. Due to thr specific nature of the mine, it is deemed to gaff no real usable value at any stage throughout it life. All impairment tests are therefore based in value in use estimation

In 30 June 2023, due to a rapid decline in the demand for coal, because of the realisation that its use is detrimental to the environment, ABC believes ther thr asset mud the impaired. On this day, the coal mine value in use is estimated to be $150 miilion.

Prepare the journal entries for the depreciation on thr coal mine at 30 Jun 2021, 30 Jun 2022 and 30 Jun 2023, and to record the adjustment for impairment at 30 Jun 2023