
Tim Fry
CEO | B.Eng. (Hons) Mining, ACSM, MAICD
Tim was formerly Executive General Manager- West Africa for Lihir Gold Ltd, an ASX listed gold producer with annual production in excess of 1 million ounces and operations in Australia, PNG and Cote d’Ivoir (West Africa). He subsequently held a key leadership role as part of the integration team following the Lihir merger with Newcrest Mining Ltd in mid 2010.
Prior to joining Lihir, Tim was President of Dyno Nobel Pacific (2002-2008) and a member of Dyno Nobel’s global management team, a company he had been with since 1992.
Tim has extensive experience in the mining, resources and civil engineering industries and has B.Eng. (Hons) Mining, ACSM, MAICD. He is also Chairman of Crucible Gold Ltd and a Director of Maxam Geo Cote d’Ivoire.

Mariana Kaker
General Manager Operations & Development | MSc (Chemistry)
Mariana is an Industrial chemist with over 25 years experience in explosives development and manufacture, including 15 years working in both R&D and plant management with Dyno.
She has significant experience in the development of bulk and packaged emulsion, underground uphole emulsion and specialised products for hot and reactive ground.
In 2005 Mariana started Explosive Manufacturing Systems (EMS) which manufactured packaged ANFO and specialised tunneling explosives and in 2009 built a second plant to produce “Python” centrally corded presplit product

Duncan Minto
Technical & Compliance Consultant | BSc (Mining), BCom
Duncan is a Mining Engineer with over 28 years’ experience in the mining and explosives industries. With over 18 years working of experience working in Dyno Nobel, Duncan has gained experience in product development, procurement and logistics, business improvement and electronic detonators.
Duncan also holds a Bachelor of Commerce degree. He has a strong commercial focus ensuring that solutions deliver both on the technical requirements and the financials for sustainability.
With the move from Dyno Nobel, Duncan became a joint owner of EMS.
Duncan has a passion for continuous improvement and a drive for ongoing product development.

Simona Jerman
CFO | MProfAcc, CPA
Simona is a highly qualified accounting and finance professional with extensive experience in auditing, accounting and financial management.
She holds a Postgraduate Diploma of Management from CQU, Masters Degree from Bond University and is a member of Certified Practising Accountants in Australia.
Over her diverse career, Simona’s responsibilities have included managing business accounts, all operations of a finance and accounting department, and complex financial audits.
Prior to joining Nitro Sibir Australia, Simona spent four years as a CFO in an audio and video engineering company where she implemented new software that improved management control. She has also spent more than 10 years in auditing companies from various other industries.
With over 20 years’ experience in executive leadership, financial & accounting management and corporate development, Simona was appointed the role of Finance and Accounting Manager at NSA in 2014.