The cause of the "stoppage accident" on the zipline at Mancheonha Skywalk in Danyang, North Chungcheong Province, was the failure of one of the trolley's rollers, according to officials. (News1 reports on November 7, 8, 9 and 10)

Danyang County and the Danyang Tourism Corporation, which operates the zipline, said on November 11 that one of the two rollers in the zipline trolley (a wheeled device that connects riders to the cable and carries them along) had failed, causing the malfunction.

The findings were confirmed in the corporation's first and second internal investigations, conducted from the afternoon of November 10 through the morning of November 11, and in a final safety inspection conducted with experts.

The final safety inspection found that the failure of one roller left a woman in her 60s stranded 25 meters into the 600-meter zipline course.

A Danyang Tourism Corporation official said, "Several internal investigations found a fault in the trolley. We needed a detailed examination, so we conducted a final inspection with experts, and it produced the same findings."

The Danyang Tourism Corporation said it would put "triple safeguards" in place in response to the safety incident.

If a problem is found during operation, the facility will be shut down immediately and the issue examined. The corporation will then strengthen its supplementary procedures, which cover identifying the cause of the malfunction, carrying out repairs, verifying the repairs and operating the system with an employee on board.

Before deciding whether to resume operations, the corporation will also make a final check of who conducted the inspection and when, who verified it and when, and whether any problems arise when an employee rides the equipment.

In particular, safety inspections will be conducted by two-person teams rather than by individual employees, and the teams will carry out the verification process.

The corporation also held safety training for all employees on November 11 and resumed operations that afternoon after completing the final safety inspection.

Lee Gwan-pyo, president of the Danyang Tourism Corporation, said, "This safety incident was an opportunity for our employees to heighten their safety awareness and recommit themselves to safety."

A Danyang County official said, "We will become a top-tier leisure facility through more thorough management and inspections so that visitors can safely enjoy the zipline and other attractions."

At about 3:20 p.m. on November 7, a device carrying a female passenger stopped midway through its run on the Mancheonha Skywalk zipline.

The passenger was rescued after hanging from the zipline for about 30 minutes. The Danyang Tourism Corporation resumed operations on the day of the accident even though the final cause had not been determined, and it continued to carry tourists on November 8 and 9, fueling the controversy.

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