Oil Spills & What Not.

1.) A containment dome is a 4 story, 7o ton structure that BP plans to lower into place over one of the three leaks to catch the escaping oil and allow it to to be pumped to the surface.  Another method they wanted to use was to install a shut off valve at the site of one of the leaks.  They also wanted to cement and seal the well to control the pressure from the oil and gas beneath the surface.
2.) Blowout preventers are devices that are meant to seal leaks.  It didn't work because natural gas started to come through the wells.
3.) Halliburton and Transocean have vested their time and interest in this problem.  BP leased the rig from Transocean and Halliburton was providing several services for the rig.  Transocean can be faced with large overhang of investor worry.
4.)They need to be less worried about how much money is spent and more about the safety of workers and environment.