2002 Perlindustria SLU

Ramon Sitges Marques February 28, 2018

Ausperl Pty Limited, New South Wales, Australia

Matthew Malaghan February 28, 2018

Aztec Perlite Company, Inc.

Anna DiNardo-Johnson February 28, 2018

Carolina Perlite Company, Inc.

Linda Chirico February 28, 2018

Cevahir Perlite

Ibrahim Ekrem Cevahir February 28, 2018

Dicalite Management Group

Matt Goecker February 28, 2018

Exfoliators (Aust) Pty LTD

Graeme Raper February 28, 2018

Gulf Perlite LLC

Konstantin Mitsiou February 28, 2018

Hess Perlite

Jake Hess February 28, 2018

Hoben International, Ltd.

Martin Cookson February 28, 2018

Imerys Filtration and Performance Additives, San Jose, CA, USA

Bill Mihalopoulos February 28, 2018