Companies who have attended the CRU Phosphates series include:
- AB Mauri Foods, Inc.
- Actagro
- AgriChem Marine Transportation LLC
- ALIAXIS Ameropa AG
- Ameropa AG
- Andritz Separation, Inc.
- Ardaman & Associates Inc.
- Arianne Phosphate Inc.
- ArrMaz
- Ashland
- Associated British Foods plc
- Avenira Limited
- Azomures
- BBA
- BCInsight Ltd
- BEDESCHI America, INC
- Begg Cousland Envirotec Limited
- Blair Rubber Company
- Bradley Pulverizer Company
- BRF Ingredients
- Buss ChemTech AG
- Cahya Mata Sarawak Management Services Sdn Bhd
- Casale S.A.
- Caveblux
- CG Thermal Llc
- CIFC P Ltd, New Delhi (Rahimtula Group of Companies)
- Clear Springs Land Co
- Comessa
- COREM
- CPPE Carbon Process & Plant Engineering S.A.
- Desmet Ballestra
- Développement Économique Sept-Îles
- Dr. Phosphate
- EcoPhos
- EEM
- Enduro Composites
- Eurochem
- FEECO International Inc.
- FERTIAL
- Flowrox
- FLSmidth (DK)
- Fluor
- Foskor
- GAMBAROTTA GSCHWENDT SRL
- GEA Group
- Geological Survey of Estonia
- Gerber Pumps International, Inc.
- Golder Associates
- Hatch
- HAUK & SASKO GmbH
- HAZEMAG USA
- ICL Performance Products Americas
- Indagro
- Industries Chimiques du Senegal
- Innophos Inc.
- Itafos
- IWF Group
- J.R. Simplot Company
- Jacobs
- Jacobs & Chemetics Inc.
- Jacobs Engineering Group Inc.
- Jenike & Johanson, Inc.
- JR Simplot
- KBR Ecoplanning Oy
- KBR Technology
- Keleti Agrár kft
- KEMWorks
- Kimre, Inc.
- K-Technologies Inc.
- Lechler GmbH
- LKAB
- Loesche America Inc
- Lomon Group
- Luossavaara-Kiirunavaara AB, LKAB
- Maaden Phosphate Company
- McLanahan Corporation
- MDG Handling Solutions S.r.l.
- Mediterranean Fertilizers Industry (MSIFCCO)
- Menardi LLC
- MERSEN
- Mine Arnaud
- MinTech
- Misr Phosphate Co. (S.A.E)
- Moodys Investors Service
- Mosaic Fertilizer Llc
- Mosman Bulk Solid Heat Exchanging
- Motridal Spa
- Nachurs Alpine Solutions
- NAQ Global Companies
- NORAM Engineering & Constructors Ltd
- Norseman Structures
- North Dakota State University
- Nouryon
- Nutrien
- OCP Group
- Ostara Nutrient Recovery Technologies
- Outotec (Canada) Ltd
- Outotec GmbH & Co. KG
- PegasusTSI, Inc.
- Philadelphia Mixing Solutions, Ltd
- Phosagro Asia Pte Ltd
- Piller TSC Blower Corporation
- POITTEMILL
- Polycorp Ltd
- Prayon S.A.
- Purolite Corporation
- PyroPhos
- Raymond Bartlett Snow- Schenck Process Group
- Reliance Mining
- ResinTech Inc.
- RHEWUM GmbH
- SABIC
- Samalaju Industries Sdn Bhd
- Sandvik Group
- Scantech International
- Schenck Process
- Secanim Ltd
- Sefar
- Shannon Chemical Corporation
- Simplot
- SNC-Lavalin
- SOFRECO
- SRK Consulting Ltd
- Stedman Machine Company
- STEULER‐KCH GmbH
- STM srl
- Sulzer Pumps Solutions Inc.
- thyssenkrupp Industrial Solutions AG
- TIMAB Industries (Phosphea)
- TOMRA Sorting, Inc.
- Toros Agri Industry and Trade Co. Inc.
- Toros Tarim San. Ve. Tic. A.S.
- University of Augsburg
- Valmet Inc.
- Weir Minerals Lewis Pumps
- Wengfu Intertrade Limited
- WorleyParsons
- Yara International ASA
- Yoorin fertilizantes
- Zimbabwe Phosphate Industries Limited