Roby S. Email & Phone Number

Kiruna, Norrbotten County, Sweden

LKAB as the oldest and biggest SLC Iron Ore underground mining project in northern Sweden since 1890. The tubular iron ore body with 4km-long, 80mthick, and 2km-depth with annual production rate 26million MT iron ore.Directly report to Mine Planning Manager and liaise with Geotechnical-Geology-Ventilation-Surveying-Mining Research for weekly progress:• Responsible for strategic mine layout including all media and supporting facilities for development and production preparation linked with drilling-loading production.• Joint-cooperation with geology-mine surveying-ventilation-rock mechanic-media support-mine research to drive the mine development towards deeper level production.• Hands-on with development progress to align with the planned layout ensuring development proceed swiftly budget and safety wise.

Jakarta Metropolitan Area

Vale with exploratory project in PT Sumbawa Timur Mining (STM) as one of the biggest Copper - Gold discovery project in Indonesia with latest estimated resources 3.2billion ton ore (0.89% Cu; 0.49g/t Au). Directly report to Engineering Director and President Director for weekly progress:• Streamlining End-to-End (Engineering – Procurement – Operation Maintenance) of Test Production Bore (TPB) Water Well program as Dewatering Trial Method for GED and Lift-1 Development totaling $30 million budget.Achievements:• Reduce 20% rig moving (total saving $45k) by securing 3rd ESP unit readiness.• Providing make-up water line 25liter/second for drilling operation to mitigate rig standby cost totaling 28 days ($700k).

Songea Municipal, Ruvuma Region, Tanzania

Mine Project Manager at Anthracite - Bituminous Coal Mining

Jakarta Metropolitan Area

Shopee Food (SF) and Shopee Express (SPX) Operation

Huu, West Nusa Tenggara, Indonesia

Vale – PT Sumbawa Timur Mining (STM) is one of the biggest Copper - Gold exploration project in Indonesia with estimated resources 1.7billion ton ore (0.89% Cu; 0.49g/t Au). Directly report to Chief Mining – Safety and President Director for weekly progress:• Managing all necessary support of 6 rigs for 56 drill target of resources exploration gradient and wedging drilling, geo-technic evaluation drive (GED), and geo-hydro test operation with average depth 1500m per hole totaling 48,000meter supported by 2 units of Bell 407 helicopter (long-line operation).• Streamlining End-to-End technical operation and coordination from Exploration drilling design to Core analysis with 4,000m core sample data per month to the Intertek Lab.Achievements:• Reduce 10% standby drilling operation and save 8% flight hour (2x Bell407) worth saving $23,000/months by simulating flight route and cargo lifting plan.• Amending 10 contracts of Operation-Construction and Air Logistics with average contract value 3million by developing KPI tools to improve contractor performance and reduce unnecessary works total worth saving $16,000/month in 5 months.• Provides new access road from green field mountainous area (11km) and generate new camp master layout (300 pob) to engage the project pre-feasibility study phase.

Kota Kendari, South East Sulawesi, Indonesia

PT Sulawesi Cahaya Mineral (SCM) - PT Merdeka Battery Material is one of the biggest Nickel mining in Indonesia (previously owned by Rio Tinto). Directly report to Technical Services Mine Plan Manager for weekly progress:• Develop 12-year Life of Mine production breakdown into 3MRP using Vulcan9 (total 38million mineable nickel ore reserve) in 318Ha pit-shell area for Pyrometallurgy, Heap Leach, and HPAL ore processing, including all supporting infrastructure (disposal, processing plant area, tailing dam, workshop) using Surpac6.6 and Civil 3D AutoCAD.• Develop technical evaluation reports (PA-UA-MA) integrated with fuel and working hour to monitor budget usage compared to monthly production.Achievements:• Cut 10% haul road length (1.4Km of 15Km) consist of 16 units 40Ton Truck to reduce 5 minutes cycle time (total worth saving $10,500/month in 4 months).• Boosted 18% ore mine recovery (add 6 million mineable nickel ore reserve totaling NPV $32,400,000) by re-sloping UPL geometry based on Geotechnical Safety Factor.

Penajam North Paser Regency, East Kalimantan, Indonesia

PT Indo Mining Services as United Mining Services (UMS) subsidiary in Indonesia site is an open-pit coal mining in East Kalimantan with total production 0.6MTPA. Directly report to the Owner in South Africa for weekly operation progress:• Managing led operation of 1,8ktpd coal production incorporated with weekly OHS contractor performance review.• Develop weekly inspection - observation plans with OHS contractor team as a safety operation mentor to develop safety awareness for the operator (front liner).Achievements:• Deliver all (Operation-Engineering-Accommodation) projects milestone 1 month ahead schedule (project worth $19.5million) with 7% budget saving ($1.3million).• Obtain 10% discounted fee of Geo Services coal analysis and competitive coal off-takers agreement with HMS Bergbau, Far East, and Nobel.

Berau Regency, East Kalimantan, Indonesia

Golden Energy Mines - PT Berau Coal (BC) is a Top-5 Indonesia Coal Company; an open pit mine with 3 major sites located in Berau, East Kalimantan with total production 30MTPA. Directly report to Mining Operation GM and HSE – Mine Operation Director for weekly operation progress:• Led operation of 30ktpd coal production by simulating coal getting plan and dispatching haul sequence of 25 units PC2000, 3 units EX3500 matched with 140 units HD785.• Developed a Supply Chain & Project Dashboard to present Supply chain Performance and Project Progress by consolidating with McKinsey & Co.Achievements:• Succeed to deliver 2 projects (Radial Stacker Coal Crusher for 5 new coal brand generation and HSE Automation-RFID for Online Inc.) totaling project worth $6.5million.• Saved 7% fuel usage (total saving worth $407k) in 3 months by spearheading ECO Mode optimizing program in total of 48 units HD Komatsu.• Boosted 8% coal hauling capacity (total increase 65ktpm; NPV worth $1.1million) by adding 6 Double Trailer unit for consistent delivery 900ktpm coal to port coal barge.• Generated contractors KPI evaluation table based on the commercial parameter for production and safety quarter performance with penalty-award applied.

Bandung, West Java, Indonesia

PT Rokatera Prima Minera is a Mining Consulting Firm providing an End-to-End Mining Services consultancy and supervision on-site Directly report to CoW shareholder and Operation Director for weekly operation progress:• Led and motivated 2 months of 1Jackro175 exploration drilling team to get an additional 800k ton coal resources and build coal body using Minex 6.4 to obtain 2.5 million measured resources.• Consistent 40k ton coal operation by supervising 4PC600 matched with 8ADT740 using coal forecasts and quality memo (coal quality notes with actual picture sample).Achievements:• Develop Life of Mine including feasibility study report for 5 years production (total 1.9 million mineable coal reserve in 18Ha) using Minex 6.4 software for Yearly to 3MRP schedule breakdown.• Boosted 18.5% coal mine recovery (additional 300k minable coal) with geology modeling resources reconciliation by re-sloping UPL bench geometry based on Geotechnical Consultant Study.

Bandung, West Java, Indonesia

Spearheaded Acid Rock/Mine Drainage (ARD/AMR) research in big coal open pit by: • Conducting five tests (Static, Kinetic, XRD, XRF, and Microscope Mineral) to characterize pyrite specifications and its genesis.• Simulated pyrite dispersion pattern in coal mine pit with organic and an-organic sulfur content as a back analysis of coal basin genesis.

Master Of Science - Ms, Mining And Mineral Engineering, 3.58

Activities and Societies: Mine Environment Laboratory Researcher for Static and Kinetic Test (Acid Potential Test from Insitu Rock.

Bachelor Of Science - Bs, Mining And Mineral Engineering, 3.26

Activities and Societies: • Student Mining Committee Leadership Workshop • 3rd Winner of PERHAPI Student Paper Competition• 4-years.