Kakita Naoki
Kakita-san's career began on Japan's public works — service tunnels, sewer pipelines and water-supply tunnels — where he absorbed the meticulous planning and construction culture that defines Japanese engineering. Those early drives in Hiroshima, Niigata and Yamaguchi taught the fundamentals that no classroom can: ground behaviour, machine rhythm, and the discipline of doing small things perfectly, every ring.
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Singapore
Thomson–East Coast Line — T316 / T310STEC EPB TBM drives through the city centre.
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Singapore
Thomson–East Coast Line — T202Kawasaki TBM running-tunnel drives.
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Indonesia
Jakarta MRT — CP202 / CP201JIMT and Kawasaki EPB machines beneath one of the world's most congested capitals.
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Hong Kong
Express Rail Link — XRL 825Herrenknecht TBM drives for the territory's high-speed rail connection.
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Japan
Hiroshima Common Service TunnelUrban utility tunnel construction.
Jasim Uddin
Jasim Uddin has spent over 25 years keeping tunnel boring machines alive — assembling them in launch shafts, running them at the face, and fixing them when the ground fights back. He began as a mechanic and welder on Samsung, Taisei and Sembawang tunnel contracts, mastering TBM assembly, dismantling and troubleshooting from the workshop floor up.
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2018 — Present
Mechanical Superintendent · Yu Sin Engineering Work Pte LtdTBM operations and maintenance supervision, machine and operator scheduling for full tunnel teams — Thomson–East Coast Line and Cross Island Line packages.
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2015 — 2017
Mechanical Superintendent · Penta-Ocean ConstructionSupervision of mechanics and welders in maintenance, repair and assembly on Singapore tunnel works.
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2013 — 2015
Assistant Mechanical Superintendent · MMC-Gamuda KVMRTTesting, commissioning, troubleshooting and maintenance of the Klang Valley MRT variable-density TBM fleet.
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2007 — 2012
Senior Mechanical Superintendent · Obayashi CorporationSupervision of TBM maintenance, repair and assembly teams.
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2006 — 2007
Mechanic & Welder · Sembawang CorporationTBM assembly, dismantling and troubleshooting; workshop welding, cutting, fabrication and equipment installation.
Mohammad Zahirul Islam
Zahirul Islam's twenty-four years underground cover the full breadth of Singapore's tunnel programme. Most recently he has driven CREG earth-pressure-balance machines on the Cross Island Line's CR111 contract and Herrenknecht EPBs on the Deep Tunnel Sewerage System's T08 — both under KSL Tunnelling. His first deep-sewer drives came far earlier, on DTSS T04 with a Mitsubishi machine under Samsung Corporation.
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Singapore
Cross Island Line — CR111CREG EPB TBM drives under KSL Tunnelling Pte Ltd.
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Bangladesh
Roads, River Bank Protection & BuildingsHeavy civil construction — road works, river bank protective works and building construction.
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Singapore
Deep Tunnel Sewerage System — T08Herrenknecht EPB TBM drives under KSL Tunnelling Pte Ltd.
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Singapore
Thomson–East Coast Line — T311CREG EPB TBM drives under Yu Sin Engineering.
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Singapore
EW2 Cable TunnelKawasaki Heavy Industries slurry TBM under SK E&C on the island's power cable network.