DUESSELDORF, Oct 30 (Reuters) - The chief executive of

Germany's Bilfinger has promised full transparency in

investigating the collapse of a boat dock in the U.S. state of

Georgia in which seven people were killed.

"This will be analysed in full with all that this entails,"

Thomas Schulz said at a press event in Duesseldorf, in comments

scheduled for publication on Wednesday.

The accident, which also caused multiple injuries, happened

on Oct. 19 during a celebration of Sapelo Island's tiny

Gullah-Geechee community of Black slave descendants.

Centennial Contractors Enterprises, a Bilfinger company,

served as the general contractor for the dock and gangway's

construction, working in partnership with local subcontractors

and vendors, according to the company.

The cause of the collapse remains unclear, Schulz told

reporters, adding, "We don't know much. There is no indictment

or anything else."

Bilfinger's share price plummeted by as much as 15%

following the accident.

Asked how the German industrial services provider might

reassure investors, Schulz said: "You can only reduce

uncertainty if you know exactly what has happened, what the

consequences are."

He pushed back against estimates of how much the accident

might cost the company, calling them "purely speculative".