In the implementation of a toll road project, sufficient pavement material is needed, so based on the selection of the planned quarry location, one of the mountains or hills that can be taken stone material to support the project is chosen. In carrying out quarry crusher stone operations, it is necessary to provide several heavy equipment to support the work process. So in this journal discussion, the selection of the right tools in the operation of quarry crusher stone is emphasized.

This study aims to examine the effect of return on assets, earnings per share, and net profit margin on stock prices. This research uses quantitative methods. The population of this study uses mining sub sector companies listed on the Indonesia Stock Exchange in 2019–2021. The proxy used to measure stock prices is the test of return on assets, earnings per share, and net profit margin on stock prices. The analytical method used in this study uses multiple linear regression analysis using the SPSS version 25 tool. This type of research uses secondary data derived from annual reports of companies listed on the Indonesia Stock Exchange in 2019–2021. The results of the research return on assets (ROA), earning per share (EPS) and net profit margin (NPM) together have a significant positive effect on stock prices.

This study aims to examine the effect of liabilities and equity on profitability (Studies of Banking Companies Listed on the Indonesia Stock Exchange in 2019-2021). The samples and data in this study were taken from banking companies listed on the IDX for 2019-2021 in the financial statements and annual reports for that period. The method used is sampling. The method used in this study uses the normality test method with multiple linear regression analysis. Based on the research results, liability has a positive and significant effect on profitability, while equity has no effect and is not significant on profitability.