The National Programme on Technology Enhanced Learning (NPTEL) is a project funded by the Ministry of Education, Government of India, which provides e-learning through web and video courses in various engineering and science disciplines. NPTEL offers courses on mining machinery as part of its Mining Engineering curriculum.

　　Some of the courses related to mining machinery that you may find on NPTEL include:

　　1. **Introduction to Mining Machinery**: This course provides an overview of the various types of mining machinery used in the industry, their working principles, and applications.

　　2. **Mining Machinery Design**: This course covers the design aspects of mining machinery, including the selection of appropriate machinery for specific mining operations, and the design of components and systems.

　　3. **Maintenance of Mining Machinery**: This course focuses on the maintenance and repair of mining machinery, discussing topics such as preventive maintenance, predictive maintenance, and troubleshooting.

　　4. **Safety in Mining Machinery Operations**: This course emphasizes the importance of safety in the operation of mining machinery and covers safety practices, regulations, and guidelines.

　　To access these courses, you can visit the NPTEL website (https://nptel.ac.in) and search for the specific course or topic you are interested in. NPTEL courses are usually available in the form of video lectures, and some courses also offer online quizzes and assignments to help learners assess their understanding of the subject matter. Registration for these courses is generally free, although some courses may offer a certificate upon successful completion for a nominal fee.