SEATTLE - A tour-bus company based in B.C. is facing another lawsuit over a crash in northeast Oregon last month that killed nine people and injured 38 others.

The accident occurred on Interstate-84 near Pendleton, Ore., on Dec. 30 after the bus operated by Mi Joo Tour & Travel crashed through a guardrail and tumbled down a snowy embankment.

The Oregonian newspaper reports that 74-year-old Eun Sook Uhm of Lynnwood, Wash., is suing the company and seeking unspecified damages for herself and her husband, who was not on the bus.

She remains hospitalized at Harborview Medical Center in Seattle, Wash., with injuries described in the lawsuit as "severe and permanent."

The suit, one of several filed against the Coquitlam, B.C.-based tour bus company, alleges it allowed the bus driver to work without proper rest.

Tour company lawyer Mark Sheer has said the driver had plenty of sleep before the crash and that black ice was a major factor.

Oregon State Police continue their investigation. The tour company has been barred from operating in the United States and Canada.

None of the allegations contained in the lawsuits have been proven in court.

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  • A piece of heavy equipment strains to move a bus which plummeted 200 feet down an embankment in rural Eastern Oregon Sunday, <a href="http://www.huffingtonpost.ca/2013/01/01/oregon-bus-crash_n_2392360.html">killing nine and sending multiple to hospitals</a>.

  • Workmen move the bus which plummeted 200 feet down an embankment in rural Eastern Oregon Sunday, <a href="http://www.huffingtonpost.ca/2013/01/01/oregon-bus-crash_n_2392360.html">killing nine and sending multiple to hospitals</a>.

  • Emergency personnel respond to the scene of a multiple-fatality accident after a tour bus careened through a guardrail along an icy highway and fell several hundred feet down a steep embankment.

  • Jaemin Seo, 23, a Korean student from Vancouver, B.C., speaks about waking up to people screaming and then being thrown from a <a href="http://www.huffingtonpost.ca/2013/01/01/oregon-bus-crash_n_2392360.html">bus that crashed</a> in rural Eastern Oregon, Sunday.

  • A guardrail where a bus overran and plummeted 200 feet down an embankment in rural Eastern Oregon Sunday, <a href="http://www.huffingtonpost.ca/2013/01/01/oregon-bus-crash_n_2392360.html">killing nine and sending multiple to hospitals</a>.

  • Emergency personnel respond to the scene of a multiple fatality accident where a <a href="http://www.huffingtonpost.ca/2013/01/01/oregon-bus-crash_n_2392360.html">tour bus careened through a guardrail</a> along an icy Oregon highway and several hundred feet down a steep embankment.

  • Emergency personnel respond to the scene of a multiple-fatality accident where a <a href="http://www.huffingtonpost.ca/2013/01/01/oregon-bus-crash_n_2392360.html">tour bus careened through a guardrail</a> along an icy highway and several hundred feet down a steep embankment.

  • Emergency crews respond to the scene of a tour bus crash along an icy Oregon highway that killed nine people and injured more than 20 others.

  • Emergency crews respond to the scene of a tour bus crash along an icy Oregon highway that killed nine people and injured more than 20 others.

  • Emergency crews respond to the scene of a tour bus crash along an icy Oregon highway that killed nine people and injured more than 20 others.

  • Emergency crews respond to the scene of a tour bus crash along an icy Oregon highway that killed nine people and injured more than 20 others.

  • Emergency crews respond to the scene of a tour bus crash along an icy Oregon highway that killed nine people and injured more than 20 others.

  • A tour bus careened through a guardrail along an icy Oregon highway and several hundred feet down a steep embankment Sunday, killing nine people and injuring more than 20 others, authorities said.

  • Emergency crews respond to the scene of a tour bus crash along an icy Oregon highway that killed nine people and injured more than 20 others.