We consider a competitive extraction industry comprising many small firms, each with a slightly different quality of mineral holdings. With "rapidly" declining quality of holding per firm we observe rent declining over an interval. We then take up the familiar planning model and isolate the tax...

The research objective was to analyze the financial performance of the miningcompanies of the Metal and Mineral sub-sectors listed on the Indonesia StockExchange in the 2014-2018 period. The performance evaluation method uses ratioanalysis, which consists of ratios; Liquidity, activity, solvency...