They were a private company. They used the shotgun approach which is that it requires no prior mapping. The disadvantage of this method was that large genomes need large amounts of computer power to reassemble the genome from its fragments. Sequencing was invented by frederick sanger in 1995. Sager was an english biochemist (www.brown.edu).
The project can assemble twelve thousands bases every minute that is 720,000 per hour. The scientist determine that the sequence of three billion chemical bases that make up a person. They estimated fifty thousands to one hundred thousands genes in human DNA. THe human genome project covered ninety percent of the genome by the end of 2001. All human are 99.9% genetically identical. The United States, Great Britain, France, Germany, Japan and China all have research programs for the human genome project.