SqlPlus Report Generation Column Headings Truncated

Running SQL Plus on Oracle 10g.

When creating reports I find that column headings are truncated to the maximum length of the column data.  This is causing problems becuase the data is to be imported into Access and full heading names are required.  A read of the documentation seems to say that there is no way round this but wondered if anyone had some magic spells, rain dances or other proven methods for getting this to work properly.

My script is:

<code>
set echo off
set arraysize 5000
set colsep ';'
set sqlblanklines on
set linesize 10000
set trimspool on

set heading on
set pagesize 50000
set timing off
set termout off
set feedback off
set verify off
set concat on

COLUMN MANDT  TITLE 'MANDT'  FORMAT A5
<<snip>>
COLUMN DEAR6  TITLE 'DEAR6'  FORMAT A5


SPOOL <<snip>>.TXT
select * from SAPR3.KNA1 where rownum < 11;
SPOOL OFF
</code>

Sample output:
MAN;KUNNR     ;LAN;NAME1                              ;
010;1000000000;GB ;name removed                       ;


Note the first column "MAN" should read "MANDT"

Thanks