One of the top Researchers I had the chance to work with

Ellis,

When I was a PhD student, I read some of your very important papers. 

Then, when I joined the R&D center, it was a great pleasure to discuss with you cement hydration mechanisms. I was always impressed by your wide scientific knowledge, especially on chemicals, something that was (and still is) totally complicated for me.

Later, I remember a meeting in Switzerland where we have seen a lab demo using confidential products. You managed to discover almost all used products only by seeing how they reacted together, which allowed us to better negociate a partnership with this startup.

Finally, I remember all other good times, in the bus or during these "English Corner" sessions for which you provided us many good lessons of english humour.

I will miss you, Ellis

Emmanuel GUILLON