Currently, one of the main tasks of every employer is to ensure a safe and healthy working environment for every employee. In a global case, it should not only be a legal act, but especially a moral act. The modern policy of each employer should therefore be set in such a way as to continuously improve the occupational safety of employees. This continuous improvement can be achieved in particular through continuous periodic inspections and audits carried out by independent occupational safety staff. This chapter deals with increasing occupational safety by modernizing a stationary line in a certain (unnamed) quarry in the Czech Republic. Thanks to the modernization of this stationary line, not only will there be an increase in work safety, but also greater efficiency in crushing and sorting and, in general, greater efficiency in terms of both energy and the environment. In the first part of the paper, we will get acquainted with the general description of the quarry, including its subsoil. In the second part of the paper we will deal with the description of the existing stationary line and then a practical example of the modernization itself, which leads to the already mentioned increase in the safety of quarry employees.