Hi,
I have extensive experience managing, scrubbing and creating contact lists on MS Excel. This a part of day to day responsibilities. I can easily contacts for 340 companies within 4 days or less. The largest list I have had to manage contained 19,000 names to create 19,000 drops for a distribution.
I hope this information helps. If would like to further discuss feel free to contact me.
Thanks,
Zaira