Weekly Buy/Sell Report

First Call/Thomson Financial Insiders' Chronicle, July 26, 1999

                                   EARNINGS PER SHARE

                                    Last     Previous
Company               Symbol *     Fiscal     Fiscal
                      Exchange      Year       Year

BUYS
MCWHORTER TECH INC   NYSE * MWT    1.52(8)       1.49

SELLS
TERADYNE INC         NYSE * TER    1.38(8)       1.48

                      EARNINGS PER SHARE

                     Current   Previous
Company               Year-     Year-
                     to-Date   to-Date

BUYS
MCWHORTER TECH INC   0.48(9)       0.54

SELLS
TERADYNE INC         0.60(9)       1.04

                             STOCK PRICE

Company                52-Week     Recent    P/E
                        Range      Price    Ratio

BUYS
MCWHORTER TECH INC   12.43-25.43    17.50   11.30

SELLS
TERADYNE INC         15.00-79.25    70.75   77.60

FISCAL YEAR: (6) denotes 1996 as last fiscal year reported; (7) denotes 1997 as last fiscal year reported; and, (8) denotes 1998 as last fiscal year reported.

CURRENT YEAR TO DATE: (1) denotes 1st quarter earnings; (2) denotes 2nd quarter earnings, (3) denotes 3rd quarter earnings; and, (4) denotes 4th quarter earnings.