The problem with getting the LHC up and running has been with a group of people who think that the large particle accelerator will produce such things as black holes and other exotic phenomena, which could possibly destroy the Earth.

In response, two safety reviews were performed on the theory behind the LHC and its actual operations. A group of independent scientists, called the LHC Safety Study Group, performed an analysis in 2003 and found that the LHC “presented no danger.”

In 2008, members of the LHC Safety Assessment Group (LSAF) published a report undating the 2003 report. The independent particle physicists re-affirmed the conclusions of the LHC Safety StudyGroup.

The CERN Scientific Policy Committee, a group of scientists, external to CERN that advises the organization, endorsed the conclusions of the LSAF.

A safety review (“Review of the Safety of LHC Collisions”) was released on June 20, 2008, by CERN concerning the safety aspects of the LHC.

A summary of the LSAF report is found at CERN's website "The Safety of the LHC."

The conclusion of the report is quoted on the third page.