1. A coal mining enterprise that has been legally produced before the State Council promulgated the "Safe Production License Regulations" must obtain the "Coal Mine Safety Production License" before January 14, 2005. If the coal mine safety production license is not obtained, it shall not engage in coal production.

2. The coal mining enterprise must apply for the “Safety Production License for Coal Mines” as a unit of the natural well of the mine to achieve a certificate of mine (well).

3. From the date of promulgation of the Regulations on Safe Production License, the newly-built coal mine must obtain the “Safety Production License for Coal Mines” before it can be put into production, in order to be allowed to produce; the coal mines must be re-examined before the production is completed. The Coal Mine Safety Production License can only be granted for production.

Second, the management principles of coal mine safety production license

Guizhou Coal Mine Safety Supervision Bureau is responsible for the issuance and management of coal mine safety production licenses of various coal mining enterprises in the administrative area of ​​the province. The management principles for grading acceptance, review and verification, and unified issuance of coal mine safety production licenses shall be implemented.

1. The Guizhou Coal Mine Safety Supervision Bureau is responsible for the acceptance, verification and verification of the coal mine enterprise “Coal Mine Safety Production License” managed by the Central Government, and submits it to the National Coal Mine Safety Supervision Bureau for approval. It is also responsible for the announcement of the coal mine safety production licenses issued by various coal mining enterprises.

2. Each coal mine safety supervision office is responsible for the acceptance application and review and verification of other coal mine enterprises in the jurisdiction of the “Coal Mine Safety Production License”, and reports to the Guizhou Coal Mine Safety Supervision Bureau for approval.

3. According to the relevant provisions of the Administrative Licensing Law, coal mine safety supervision agencies and other relevant units or related personnel may not collect relevant fees in the name of applying for coal mine safety production licenses.

3. Application procedures for coal mine safety production licenses

1. The centrally managed coal mining enterprise directly applies to the Guizhou Coal Mine Safety Supervision Bureau.

2. Other types of coal mining enterprises apply directly to the local coal mine safety supervision office.

four,

Certification procedure for coal mine safety production license

1. The examination and approval of the Coal Mine Safety Production License shall be completed within 45 working days.

2. If the Guizhou Coal Mine Safety Supervision Bureau approves the issuance of the certificate, the local coal mine safety supervision office shall be responsible for informing the coal mining enterprise to collect it at the office.

3. The centrally managed coal mining enterprise shall be examined and verified by the Guizhou Coal Mine Safety Supervision Bureau and reported to the National Coal Mine Safety Supervision Bureau for approval and issuance of certificates.

V. Relevant information to be prepared for the bid for the Coal Mine Safety Production License

(1) The large and medium-sized coal mines applying for the “Safety Production License for Coal Mines” shall prepare the following materials:

1. Basic overview of coal mining enterprises:

2. A copy of the Mining License, Coal Production License, Coal Mine Chief Safety Qualification Certificate, and Business Administration License.

3. Compilation of safety production responsibility system and safety management system.

4. Summary of operation rules for mining, excavation, machine, transportation, communication, blasting and other major types of work.

5. The approved safety and technical measures implementation plan and cost use plan and completion in 2003 and 2004.

6. The setting of the safety production management organization and the composition table of the full-time safety production management personnel.

7. Obtain a certificate registration form for coal mine special operations personnel.

8. Annual plan and record sheet for practitioners' education and training.

9. A copy of the employee's downhole accident insurance policy.

10. Coal Mine Safety Evaluation Report (The legal production coal mine should provide the coal mine safety degree evaluation report before January 14, 2004; the coal mine construction project should provide the safety acceptance evaluation report).

11. Approved mine annual disaster prevention and treatment plan.

12. Construction of mine rescue teams and their implementation of disaster relief services.

13. One copy of the working procedures for the mining face currently produced.

14. Provide a full set of engineering drawings.

(2) The following information shall be prepared for the application of the Coal Mine Safety Production License by a small coal mine:

1. Basic overview of coal mining enterprises:

2. A copy of the Mining License, Coal Production License, Coal Mine Chief Safety Qualification Certificate, and Business Administration License.

3. Safety technical measures implementation plan and cost use plan.

4. The setting of the safety production management organization and the composition table of the full-time safety production management personnel.

5. Obtain a certificate registration form for coal mine special operations personnel.

6. Education and training of employees.

7. Practitioners in the underground accidental injury

Sand Casting, also known as sand molded casting, is a metal casting process characterized by using sand as Sand casting, The term "sand casting" can also refer to an object produced via the sand casting process. Sand castings are produced in specialized factories called foundries. Over 70% of all metal castings are produced via a sand casting process.

Sand casting is relatively cheap and sufficiently refractory even for steel foundry use. In addition to the sand, a suitable bonding agent (usually clay) is mixed or occurs with the sand. The mixture is moistened, typically with water, but sometimes with other substances, to develop strength and plasticity of the clay and to make the aggregate suitable for molding. The sand is typically contained in a system of frames or mold boxes known as a flask. The mold cavities and gate system are created by compacting the sand around models, or patterns, or carved directly into the sand.

Basic process

 There are six steps in this process:

 1.Place a pattern in sand to create a mold.

 2.Incorporate the pattern and sand in a gating system.

 3.Remove the pattern.

 4.Fill the mold cavity with molten metal.

 5.Allow the metal to cool.

 6.Break away the sand mold and remove the casting.

Sand Casting

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