Thona Elisa Harungguan Email & Phone Number

-Designed gold processing plants, ensuring efficient recovery and extraction processes.-Designed chemical plants specializing in recycling cyanide, contributing to sustainable and environmentally friendly practices.-Developed process documentation including Standard Operating Procedures (SOPs), Process Flow Diagrams (PFDs), Piping and Instrumentation Diagrams (P&IDs), and control plans in accordance with industry regulations and best practices.-Collaborated with cross-functional teams, including mechanical engineers, electrical engineers, and civil engineers, for the design and optimization of gold processing plants.-Experience with international projects in Australia and West Africa, overseeing the implementation of process engineering solutions in gold processing plants.

Indonesia

-Managed a team of approximately 10 personnel to successfully execute projects in metallurgical operations.-Led multiple concurrent projects, overseeing resource allocation, setting timelines, and acting as the primary liaison among stakeholders.-Successfully executed projects generating revenues ranging from $10,000 to $200,000 USD per project.-Possess extensive expertise in gold recovery testworks, including bottle roll leach tests, column tests, agitated leach tests, and comprehensive experience in planning and executing full testwork programs from comminution (crushing and grinding) to analyzing recoveries from leaching and carbon processes.

Jakarta, Jakarta, Indonesia

-Managed own portfolio and invested/traded in various public markets.-Achieved a return on investment (ROI) of around 300 % annually.-Developed statistical models to predict public market activity, and drive decisions in investing.

- Develop cost estimates and budgeting for projects to identify and quantify cost factors.- Prepare and deliver technical presentations.- Confer with customers and engineers to assess equipment needs and requirements

-Managed the operations team, consisting of +- 15 people, of a CIL gold processing plant.-Saved 50% of operational reagent costs, by optimizing reagent consumption with theimplementation of alternative processing methods, found by designing test works and analyzing test data