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Probe blames weak soil in Hawaii zip line death
State workplace investigation into Hawaii zip line death finds soil couldn't bear tower load
By The Associated Press

HONOLULU (AP) ' A Hawaii zip line tower collapsed because of weak soil, sending a worker plunging 200 feet to his death, concluded an investigation released Tuesday by the state Department of Labor and Industrial Relations.

The department's Occupational Safety and Health Division launched a workplace investigation after worker Ted Callaway, 36, of Lahaina, died Sept. 21 while test-riding a zip line being built along the Big Island's Honolii Stream. His co-worker Curtis Wright, of Miamisburg, Ohio, was critically injured.

Ground anchors were built in soil that couldn't withstand the weight of the tower, cables and rider, the investigation said, and GoZip LLC failed to take reasonable precautions to ensure that the anchors could support the load.

GoZip officials could not immediately be reached by phone for comment.

"Unfortunately, this is another workplace fatality that was preventable and we share the sorrow of the family, friends, co-workers and others affected by this accident," said Dwight Takamine, director of the Department of Labor and Industrial Relations.

The state proposes penalties totaling $13,500.

With Callaway riding the line and Wright standing on the platform of the tower, the ground anchors supporting the tower "abruptly pulled out of the ground," the investigation said. An engineer hired by the GoZip to conduct testing after the accident concluded that the subsoil was Pahala Ash, a fine particulate mineral that looks like normal soil but loses up to 90 percent of its natural strength when disturbed.

"The engineering report stated that much of the soil along the Hamakua Coast of Hawaii Island that appears to be red dirt might in fact be Pahala Ash," the department said. "This raises serious concerns about the stability of structures that rely on ground anchors for support, including zip line towers at other locations on the island."

Callaway's mother, Ilene Callaway, recently told the Hawaii Tribune-Herald that she wants to ensure Hawaii's growing zip line industry has stricter regulations.

But in March, Hawaii lawmakers deferred a bill, effectively killing it for the session, calling for the state to take oversight of safety for the tourist attractions that send thrill-seekers gliding along cables strung high above rural areas of Hawaii at speeds approaching 30 mph.

The bill would have required the Department of Labor and Industrial Relations to conduct $100 inspections. Instead, the industry will continue being responsible for its own safety regulations.

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