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Chart showing increase in number of labs participating and in the percent approved
Text version of chart data:
Chart Title: Blood Lead Labs: OSHA evaluating Lab performance since 1979
Chart Type: Horizontal Bars by year (1979, 1989, 1994, 1999, & 2004) - graph line by percentage of participation
Chart Elements: 11
   10 bars one for each year's total participants and each year's approved participants
   1 graph showing each year's percentage of approved participants
Values:
   2004: 217 approved / 229 participants = 95% approval
   1999: 255 approved / 272 participants = 94% approval
   1994: 212 approved / 267 participants = 79% approval
   1989: 178 approved / 249 participants = 71% approval
   1979: 45 approved / 200 participants = 23% approval
Source: Raw Data Files from OSHA Program Participation