11. Discounting obsolete equipment , California classrooms today provide just one computer for every 73 students, the report says. 12. They were way ahead of us in many areas despite their obsolete equipment and bulldozer investigative techniques. 13. Many British yards had continued to use outmoded working practices and largely obsolete equipment , making themselves uncompetitive. 14. Many are factories operating with obsolete equipment . 15. High concentrations of methane gas, safety violations, rampant negligence, corruption and obsolete equipment plague the country's mines. 16. Hudsons moved forward, while 5 Squadron in Fiji, commenced operations against the Japanese despite its obsolete equipment . 17. This solution, which experts call the museum approach to archiving, means keeping obsolete equipment around the house. 18. Due to the use of obsolete equipment , the experiment failed, and the force was disbanded after three months. 19. Dozens of Russian miners have been killed in recent years due to lax safety precautions and obsolete equipment . 20. Lax safety precautions and obsolete equipment at Russian mines have led to scores of accidents in recent years.