Starting a stone crusher business is a capital-intensive venture that requires a considerable amount of investment. To set up a stone crushing plant, the capital required may vary depending on the specific requirements of the project. However, as a general rule, the following capital investment can be considered:

1. Land - A minimum of 1 acre of land is required for the setting up of a stationary crusher plant. This land will also be used to store raw materials such as gravel, sand, and chippings, which will be used in the production process.

2. Machinery and Equipment - The next significant capital investment required is for the purchase of machinery and equipment. A typical stone crushing plant requires various types of machinery such as excavators, loaders, crushers, conveyors, and screens.

3. Raw Materials - Successful stone crushing businesses require a steady supply of raw materials to meet the production demands. The cost of acquiring these raw materials should also be factored into the overall investment plan.

4. Utilities - The setup of a stone crushing plant requires the provision of utilities such as water, electricity, and gas. These utilities are essential to keep the production process running smoothly.

5. Labor - The cost of hiring skilled and unskilled labor should also be added to the capital requirement. A team of personnel will be required to ensure the smooth functioning of the machinery and equipment.

It is essential to conduct a thorough market research and feasibility study before investing in a stone crushing business. This will help to identify the demand for the product and the competition in the market, which will aid in determining the capital requirement.

Therefore, starting a stone crushing plant requires a considerable amount of capital investment. The actual amount required may vary depending on the specific requirements of the project. However, as a general rule, it is essential to factor in the cost of land acquisition, machinery and equipment, raw materials, utilities, and labor in the capital estimation. Conducting market research and feasibility study is also crucial in determining the capital requirement.