I. 15301 Key Projects on the Working Face

According to the Notice issued by the Guizhou Bureau of the National Mine Safety Administration, the Provincial Energy Administration, and the Provincial Emergency Management Department on “Effectively Strengthening On-site Safety Management at Mines and Safety Control During Key Periods” (Mine Safety Qian […] 2025 ] 49 as required by Document No. [number]. The mine manager, Wang Chuanqi, organized the production, safety, mechanical and electrical, ventilation, outburst prevention, and dispatch departments. 15301 A field meeting on initial mining and initial roof caving was held to implement on-site safety management and strengthen safety control during critical periods. The plan is to… 2026 year 2 month 28 Daily progress 15301 The retreat mining operations on the working face, in order to ensure proper execution… 15301 The mining operations at the working face. The following preventive measures must be implemented:

1. The Technical Department shall communicate the measures to every on-site worker and organize construction in strict accordance with the requirements, ensuring that the measures are fully implemented at the worksite.

2. Geology First : Determine the lithology of the roof and floor strata, as well as the periodic weighting step distance of the immediate roof, and develop a forced caving plan. ( Deep hole / Shallow-hole pre-splitting blasting )。

3. Support meets the standard. : Pump station pressure ≥ 30MPa , emulsion concentration 3%-5%; Initial support force of the support ≥ 24MPa , tightly fitted against the roof ; The initial support force of a single hydraulic prop in the two roadways shall be ≥ 6.5MPa , wear iron shoes to prevent sole penetration, and equip with an anti-tipping chain.

4. End cap / Cutting top line : Install closely spaced roof‑cutting pillars, remove the anchor‑rod bearing plate nuts at the upper and lower corners, and induce timely caving.

5. Mine Pressure Monitoring : Real-time monitoring of support pressure, roof subsidence, and safety valve activation; pre‑warning prior to loading; and personnel evacuation upon exceeding set limits.

6. Forced roof caving : Immediately cease mining in areas with overlying strata exceeding regulatory limits; deep boreholes. / Shallow-hole blasting is used to weaken the roof, with strict control over the caving step distance.

7. Three-dimensional extraction : High-level drilling + Underground pipe installation in goaf areas + Corner extraction, side sealing with small coal pillars, and control of air leakage.

8. Monitoring and Alarm : Gas sensors are installed at the upper corner and in the return airway; the cut‑off values are set in accordance with regulations, and production must be halted and personnel evacuated immediately upon exceeding the threshold.

9. Ventilation Assurance : Ensure adequate air supply and eliminate any lack of airflow. / Conduct operations in a breeze‑free environment and promptly seal goaf areas to prevent air leakage and oxygen ingress.

10. Coal wall control : Strictly control the mining height and ensure flat roof and floor surfaces, leaving no overhangs. ; After coal cutting, promptly move the supports and extend the telescopic beam. / Side support plate; pressurized shielded hydraulic supports in the broken section.

II. 1457 Shimen Maintenance       

1457 The Shimen roadway cannot meet the requirements for opening a newly excavated roadway, necessitating modifications to the existing… 1457 Repair work is being carried out on certain sections of the Shimen tunnels, including from… 1457 From the directional drilling site to the original 1305 The opening point of the transport roadway requires repair; length: 263m The roadway has an irregular cross-section. It is constructed using a roadheader for excavation, lining, and maintenance, with combined support consisting of rock bolts, cable anchors, and steel mesh; cable anchors… +W Steel‑belt reinforced support; in accordance with the requirements of China University of Mining and Technology, drilling and bolting are carried out at each cross‑section. 8 Root anchor bolts and 6 Short anchor cables, anchor bolts, and short anchor cables are used. W Steel strip anchors are arranged along the roadway cross-section, with drilling and installation alternating on the same cross-section and the same steel strip. They are laid symmetrically on either side of the roadway centerline, proceeding from top to bottom. The row spacing between rock bolts and short anchor cables is… 800 × 900mm , the anchor bolt specifications are all Φ 22 × 2500mm , the short anchor cable specification is Φ 17.8 × 5200mm , the repaired roadway has a three-centered arch cross-section, with a clear width of 5.2m , medium and high 3.8m , after completing all permanent support structures, apply shotcrete in a centralized manner, for future… 15105 Preparations for the opening of the transport roadway have been completed, and the repairs are now finished. 63m。

III. Conduct a “Return-to-Work Orientation Meeting” to Help Employees Get Back into the Groove

2026 year 2 month 21 On [date], Wang Chuanqi, the mine manager of Qingli Coal Mine in Wangjiaying, presided over a “Spring Festival Return-to-Work” meeting in the third-floor conference room. The meeting reviewed and studied excerpts from General Secretary Xi Jinping’s important remarks on work safety, the State Council Work Safety Committee Office’s Urgent Notice on Effectively Ensuring Work Safety Before and After the Spring Festival, and the National Mine Safety Administration’s Notice on Strengthening Safety Management at Mines That Have Suspended Operations and on Resuming Production After the Spring Festival—Min’an […]. 2025 ] 4 No., the National Mine Safety Administration’s “Notice on Solidly Carrying Out Mine Safety Risk Prevention Work During the Spring Festival and the Period of the Two Sessions” — Mine Safety [ 2026 ] 30  The “Notice,” the “Work Reminder on Diligently Implementing the Spirit of the Video Conference of the National Mine Safety Administration,” the Fourth Inspection and Enforcement Division of the Guizhou Bureau of the National Mine Safety Administration’s “Work Reminder on Mine Safety Production During the Spring Festival,” the Office of the Guizhou Provincial Work Safety Committee’s “Reminder on Ensuring Safe Production in Enterprises Resuming Work and Production After the Holiday,” and the fourth issue of the “Warning Information” jointly issued by the Guizhou Bureau of the National Mine Safety Administration and the Guizhou Provincial Energy Administration were reviewed. Arrangements were made to implement the relevant requirements set forth in these recent documents.

IV. Conduct the “First Lesson Upon Commencement of Work” Effectively

2026 year 2 month 21 On [date], Wang Chuanqi, the mine manager of Qingli Coal Mine in Wangjiaying, presided over a safety training session titled “The First Lesson Upon Resuming Work” in the “Employee Training Room.”

The meeting began with the mine manager, Wang Chuanqi, extending his condolences to all employees. Drawing on recent policy directives and cautionary warnings, he delivered an educational briefing, urging everyone to refocus their mindset and restore their professional composure. He emphasized that all staff must transition from a holiday‑mode mentality to a work‑oriented one, diligently fulfilling their duties and approaching their tasks with dedication and professionalism.

(1) The meeting noted that

1.2025 This year, our mine has experienced work-related accidents resulting in minor injuries or worse. 19 Starting from, gas overrun accident 7 In the first half of the year, sporadic accidents occurred frequently, and the safety situation remained quite severe. 2026 This year, we aim to eliminate serious injury accidents, reduce the occurrence of sporadic incidents, and lower the rate of workplace injuries. 50% That is all.

2. Personnel exhibit uneven competency levels, with weak job-specific capabilities and insufficient operational skills.

3. Our mine faces significant challenges in disaster prevention and control. On the one hand, our mine is a prominent outburst-prone mine; therefore, we must strengthen gas management and strictly adhere to the requirements of the detailed regulations on outburst prevention. 90 The coal-extraction work for the ten-thousand-ton construction project is being carried out, while ensuring that… 15301 Gas control at the working face. On the other hand, the mine faces significant water‑related hazards; therefore, the water‑control requirements of “prediction and forecasting, investigate whenever there is any doubt, explore before excavation, and treat before mining” must be strictly enforced.

(II) The meeting emphasized

1. Firmly uphold the work safety policy of “safety first, prevention foremost, and comprehensive governance,” resolutely take General Secretary Xi Jinping’s Thought on Socialism with Chinese Characteristics for a New Era as our guiding principle, earnestly implement General Secretary Xi Jinping’s important expositions on work safety, and strengthen the concept of managing mines in accordance with the law. 。

2. Taking the “Dual‑Day” initiative as a key leverage point, we will strengthen disaster prevention and control, build inherently safe mines, and resolutely invest substantial effort in technology, planning, design, equipment, funding, and personnel. 。

3. Progress is being made in parallel across key areas—including roof control, mechanical and electrical equipment management, transportation, geological hazard prevention and water control, and the “one ventilation and three protections” system—ensuring comprehensive prevention of mine disasters. 。

4. Strengthen employee safety management by making full use of dispatch meetings, pre-shift briefings,警示教育会 (warning education sessions), and specialized training sessions to enhance employee education and training. Regularly organize training and study sessions on key documents to further improve the overall competence of employees.

5. Strengthening the foundation and consolidating the groundwork for mine safety production, we are actively promoting the adoption of new equipment, new materials, and new technologies, such as upgrading continuous miner systems and deploying coal‑bin cleaning robots.

6. Actively promote universal participation in social insurance and comprehensive performance assessments, thereby compelling practitioners to fulfill their principal responsibilities.

(3) Meeting Requirements

1. Enhance ideological awareness and accurately grasp the new landscape of workplace safety. With the mine officially resuming production, in the face of these new circumstances and tasks, all cadres and employees must cherish this hard-won opportunity to resume operations and continue strengthening safety management. Safety is the foundation and prerequisite for all work—prioritized above all else, paramount to everything, and of utmost importance. We must also clearly recognize that the mine still has significant gaps in fulfilling its principal responsibility and in establishing a solid safety‑management framework. Departments have not yet accorded sufficient attention to safety production; the tendency to “emphasize production over safety” has not been entirely eradicated; unsafe behaviors and violations of operating procedures continue to occur from time to time, and the overall safety‑management infrastructure remains relatively weak.

2. Reassess your mindset and ensure that all safety measures are properly in place. The Technical Department will lead all relevant departments in conducting a thorough review of our mine’s existing operating procedures and associated safety measures, based on the construction design, and will communicate these revisions to every on-site worker before proceeding with construction.

3. With sustained dedication, hazard identification and remediation must be brought back on track. In accordance with the relevant documents governing the resumption of work and production, the Safety Department has developed a hazard identification and remediation plan, carried out corresponding inspections and corrective actions, and, for any hazards identified, formulated rectification plans in line with the “Five Implementations” requirements to ensure that all hazards are eliminated.

4. Identify safety risks effectively and ensure robust risk control measures are in place. The organization has compiled a list of safety risks associated with resuming work and production, and communicated these risks to all employees across the mine. First, gas-related risks: as our mine is a prominent outburst-prone mine, gas remains our top safety concern; we will rigorously implement the two “four-in-one” integrated outburst prevention measures. Second, water‑related risks: we will strictly adhere to the principle of “predict and forecast, investigate whenever there is any doubt, drill before excavation, and treat before mining” in water‑hazard prevention and control. Third, fire‑related risks: we will meticulously follow all fire‑prevention and firefighting requirements and ensure their effective implementation. Fourth, transportation risks: at our mine, the auxiliary inclined shaft operates in parallel with the monorail hoist system. 1301B In the return airway, shuttle‑car transport is being used; meanwhile, the monorail hoist network has not yet been fully established, posing safety risks to lifting and transportation operations. Fifth, there are safety‑management risks: on‑site safety oversight is inadequate—for example, underground conveyor belts exhibit severe wear in multiple locations. 2025 year 15105 Two workplace accidents occurred in the return airway during belt‑handling operations. Therefore, the next step is to strengthen safety management of personnel.

5. Strengthen the implementation of responsibilities. With the Spring Festival just past, this period often sees lax discipline, weakened awareness, and heightened safety risks. All units must, in light of their specific circumstances, employ various measures to reinforce personnel management, ensure safe production order, strictly enforce attendance and departure regulations, rigorously implement the safety production accountability system, and make sure that staff are present at their posts and fully engaged. It is essential to prevent and address the tendency—among a small minority—to spend the entire day preoccupied with eating, drinking, and socializing while neglecting their work, or to be physically present but mentally absent. A sense of urgency and responsibility must prevail; everyone should consciously step out of the festive mood of the New Year holiday to ensure that work proceeds smoothly and in an orderly manner.

V. Conduct thorough technical briefings prior to project commencement.

2026 year 2 month 22 On [date], Chief Engineer Huang Xinghua convened a “Safety Technical Briefing” meeting in the third-floor conference room. The briefing focused on communicating key matters related to the work site or operational area, including: the specific workplace or project being undertaken; the characteristics of the construction activities and the associated hazards and risk factors; detailed preventive measures for these hazards; essential safety precautions; applicable safety operating procedures and standards; and emergency rescue and evacuation protocols to be followed in the event of an accident. This safety technical briefing was conducted hierarchically, extending down to frontline team leaders and individual workers.