Mt Sylvia Diatomite is focused on the development of its diatomite products and the education of current and future clients in the uses of these products.


Company information

All of the directors have a tertiary background in science, which fuels their desire to establish the value and utility of diatomite using evidence-based research.

They recognize that in this era of water shortage and increasing awareness of chemical pollution in industry and agriculture, diatomaceous earth offers unique, environmentally sustainable solutions to a diverse range of problems.

 Guy Lewington

Guy has an honours degree in Geology, and diplomas in Mineral Economics and Organic Agriculture. He is also a member of the Australian Institute of Mining and Metallurgy. He was instrumental in the discovery and development of large gold mines in Western Australia including Kanowna Belle, Sunrise Dam and Nimary. He spent seven years as an organic macadamia grower in northern NSW. As a farmer he renewed his friendship with Martin I'Ons who owned a neighbouring farm. Together they became increasingly fascinated with diatomaceous earth as a fertilizer and soil conditioner and as geologists recognized the hidden potential of the high quality product at Mt Sylvia. Guy is the Chief Executive Officer of the Company and has taken on the role of Senior Site Executive at Mt Sylvia.
Contact Guy Lewington


Dr Ian Neering

Ian has a PhD in Physiology and Pharmacology. He conducted research and taught medical and science students at the University of NSW for a number of years and attained the position of Associate Professor. Ian has been active amongst other things in developing protocols for the evaluation of fine diatomite as a physical insecticide. Ian, who lives in Canberra coordinates all of the Company's research and regulatory programs and is the Chief Financial Officer of the Company.

Contact Ian Neering



Martin I'Ons

Martin has an honours degree in geology and has worked in the mineral exploration industry since 1974 specialising in the interpretation of aerial photographs and satellite imagery. As a farmer, Martin became interested in plant nutrition and through his attempts to optimize broad acre production discovered the value of diatomaceous earth and in particular the Mt Sylvia product as having both the highest purity as well as the highest plant available silica content. Martin continues his work as a consulting geologist but provides invaluable assistance particularly in geochemistry and agronomy.
Contact Martin I'Ons




The mine at Mt Sylvia has a dedicated staff. Bob Miners, the Plant Manager has a wealth of experience, He has been with Mount Sylvia for more than seven years. Our general staff, Peter Coleman, Rob Hayward, Doug Logan and Kyle Hayward are multi-skilled and focused on quality control.

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