Erratum.

Table 8. Development of definite/probable CBD and
sensitization by average cumulative, average mean,
and peak exposure ([+ or -] SE).

Disease                No. of
outcome              individuals

Definite/
  Probable CBD           40
Sensitization            37
Normal                   377

                        Mean
                     cumulative
                      exposure
                      ([micro]                Mean
Disease                g-year/              exposure
outcome              [m.sup.3])              (days)

Definite/
  Probable CBD     181 [+ or -] 29      3483 [+ or -] 50
Sensitization    100 [+ or -] 23 (a)   1934 [+ or -] 5 (b)
Normal             209 [+ or -] 16      3359 [+ or -] 76

                        Mean                  Mean
                       average                peak
                      exposure              exposure
Disease                 (mg/                  (mg/
outcome              [m.sup.3])            [m.sup.3])

Definite/
  Probable CBD    1.6 [+ or -] 0.21     3.1 [+ or -] 0.36
Sensitization     1.6 [+ or -] 0.16     2.9 [+ or -] 0.4
Normal            1.6 [+ or -] 0.06     3.3 [+ or -] 0.13

(a) p= 0.03 for sensitization vs. definite/probable and
p = 0.0003 for sensitization vs. normal.

(b) p = 0.047 for sensitization vs. definite/probable and
p = 0.02 for sensitization vs. normal.

Table 9. Development of definite/probable CBD and sensitization by
chemical form of beryllium, mixed, nonsoluble, and soluble: mean
cumulative, mean average, and mean peak exposure levels.

                          Mixed

                        Cumulative      Mean         Peak
                        ([micro]g/   ([micro]g/   ([micro]g/
Disease outcome   No.   [m.sup.3])   [m.sup.3])   [m.sup.3])

Definite/
  probable CBD    40        50          0.9          3.7
Sensitization     37      20 (b)        0.8          6.8
Normal            377       49          0.9          5.9

                        Nonsoluble

                        Cumulative      Mean         Peak
                        ([micro]g/   ([micro]g/   ([micro]g/
Disease outcome         [m.sup.3])   [m.sup.3])   [m.sup.3])

Definite/
  probable CBD             126          1.7          5.1
Sensitization             61 (c)        1.6          5.1
Normal                     128          1.6          6.1

                         Soluble

                        Cumulative      Mean         Peak
                        ([micro]g/   ([micro]g/   ([micro]g/
Disease outcome         [m.sup.3])   [m.sup.3])   [m.sup.3])

Definite/
  probable CBD           5.8 (a)        0.9          1.1
Sensitization               19          0.8          3.3
Normal                      26          0.9          2.7

(a) p < 0.0001 for definite/probable vs. normal.

(b) p= 0.0005 for sensitization vs. normal.

(c) p=0.04 for sensitization vs. definite/probable, and
p = 0.003 for sensitization vs. normal.

Table 10. Development of definite/probable CBD and sensitization by
physical form of beryllium, dust, fume, and mixed: mean
cumulative, mean average, and mean peak exposure levels.

                                       Dust

                        Cumulative      Mean         Peak
                        ([micro]g/   ([micro]g/   ([micro]g/
Disease outcome   No.   [m.sup.3])   [m.sup.3])   [m.sup.3])

Definite/
  probable CBD    40       128          1.6          5.2
Sensitization     37      66 (c)        1.5          5.1
Normal            377      138          1.5          6.6

                                       Fume

                        Cumulative      Mean         Peak
                        ([micro]g/   ([micro]g/   ([micro]g/
Disease outcome         [m.sup.3])   [m.sup.3])   [m.sup.3])

Definite/
  probable CBD             4 (a)        0.5         0.8 (b)
Sensitization               17          0.9          3.3
Normal                      20          0.6          1.9

                                       Mixed

                        Cumulative      Mean         Peak
                        ([micro]g/   ([micro]g/   ([micro]g/
Disease outcome         [m.sup.3])   [m.sup.3])   [m.sup.3])

Definite/
  probable CBD              49          0.9          3.7
Sensitization             17 (d)        0.8          6.8
Normal                      46          0.9          5.9

(a) p < 0.0002 for definite/probable vs. normal.

(b) p = 0.04 for defintite/probable vs. normal.

(c) p = 0.0021 for sensitization vs. normal.

(d) p = 0.0004 for sensitization vs. normal.

Table 11. Development of definite/probable CBD and
sensitization by the American Conference of Governmental
and Industrial Hygienists notice of intended change,
current OSHA, and DOE DWA threshold levels.

                             Mean DWA exposure ([micro]g/
                                 [m.sub.3]) [n (%)]

                                                     [greater
                                                       than
                                                       or
                                                      equal
                        0 to    0.02 to    0.2 to      to]
Disease outcome         < 0.02   < 0.2      < 2         2

Definite/probable CBD   0 (0)    0 (0)    33 (10)     7 (6)
Sensitization           0 (0)    0 (0)     24 (7)    13 (11)
Normal                  0 (0)   3 (100)   279 (83)   95 (83)