{
  "company": {
    "name": "PT Karya Tambang Sejahtera",
    "short_name": "KTS",
    "legal_form": "Perseroan Terbatas",
    "npwp": "01.234.567.8-901.000",
    "siup": "503/234/DPMPTSP/KAB-KKR/2020",
    "iup": {
      "number": "540/24/KEP-IUP/DESDM/2020",
      "type": "IUP Operasi Produksi",
      "commodity": "Batubara",
      "area_ha": 2500,
      "issued_date": "2020-05-15",
      "valid_until": "2040-12-31",
      "issuing_authority": "Gubernur Kalimantan Timur"
    },
    "amdal": {
      "ref": "660.1/023/AMDAL/DLH-KKR/2020",
      "approved_by": "KLHK via DLH Kutai Kartanegara",
      "approved_date": "2020-03-10",
      "valid_until": "2030-03-10"
    },
    "location": {
      "kecamatan": "Tenggarong Seberang",
      "kabupaten": "Kutai Kartanegara",
      "provinsi": "Kalimantan Timur",
      "centroid": { "lat": -0.487, "lon": 117.154 }
    },
    "operating_since": "2020-06-01",
    "employees_own": 250,
    "employees_contractor": 400,
    "contractor": {
      "primary": "PT Pama Persada Nusantara",
      "scope": "Coal getting + OB removal (Pit North)",
      "contract_rate_usd_per_bcm": 2.85,
      "contract_until": "2027-12-31"
    },
    "shareholders": [
      { "name": "Keluarga Santoso Holdings (family trust)", "share_pct": 65 },
      { "name": "PT Energi Mitra Nusantara", "share_pct": 35 }
    ],
    "key_officers": {
      "president_director": { "name": "Ir. Hendra Santoso, MBA", "since": "2020-06-01" },
      "director_operations": { "name": "Ir. Raden Wijaya, MM", "since": "2020-06-01" },
      "cfo": { "name": "Dra. Siti Nurhaliza, Ak", "since": "2021-03-15" },
      "ktt": {
        "name": "Ir. Budi Santoso, M.T",
        "certification": "POU-1 (Pengawas Operasional Utama)",
        "cert_number": "POU-001/ESDM/2019",
        "valid_until": "2028-11-30",
        "since": "2020-06-01"
      },
      "pjo": {
        "name": "Ir. Agus Pramono",
        "bsre_cert": "BSrE-KTS-PJO-2024-001",
        "since": "2020-06-01"
      },
      "env_manager": { "name": "Ir. Dewi Lestari, M.Sc", "cert": "AMDAL-A" },
      "k3_manager": { "name": "Ir. Joko Widodo, M.T", "cert": "AK3 Umum" }
    },
    "consultant_partners": {
      "mining_consultant": "PT Mineserv Indonesia",
      "amdal_consultant": "PT Enviro Karya",
      "competent_person_reserves": "Ir. Dr. Bambang Wibowo (IAGI-1234)",
      "audit_firm": "KAP Rekan Asia (affiliated PKF)"
    }
  },
  "coal_spec": {
    "seam_name": "Karya Seam",
    "type": "Sub-bituminous (Lignite B per ASTM)",
    "cv_gar_range_kcal_kg": [4800, 5200],
    "cv_nar_range_kcal_kg": [4200, 4600],
    "total_moisture_pct_range": [22, 28],
    "ash_pct_range": [4, 6],
    "sulphur_pct_range": [0.2, 0.4],
    "hgi_range": [45, 55],
    "ash_fusion_temp_c": 1280
  },
  "pits": [
    {
      "id": "pit-north",
      "name": "Pit North (Karya-1)",
      "code": "PN",
      "area_ha": 450,
      "status": "active",
      "stripping_ratio_current": 5.2,
      "stripping_ratio_lom": 4.6,
      "current_floor_rl_m": -12,
      "final_pit_floor_rl_m": -45,
      "bench_count": 5,
      "block_count": 22,
      "primary_contractor": "PT Pama Persada Nusantara",
      "centroid": { "lat": -0.482, "lon": 117.148 }
    },
    {
      "id": "pit-south",
      "name": "Pit South (Karya-2)",
      "code": "PS",
      "area_ha": 320,
      "status": "active",
      "stripping_ratio_current": 4.4,
      "stripping_ratio_lom": 4.2,
      "current_floor_rl_m": 8,
      "final_pit_floor_rl_m": -25,
      "bench_count": 3,
      "block_count": 18,
      "primary_contractor": "Owner-operated",
      "centroid": { "lat": -0.493, "lon": 117.161 }
    }
  ],
  "benches": [
    { "id": "pn-b1", "pit_id": "pit-north", "name": "PN-B1", "elevation_rl_m": 30, "height_m": 10, "status": "mined_out" },
    { "id": "pn-b2", "pit_id": "pit-north", "name": "PN-B2", "elevation_rl_m": 20, "height_m": 10, "status": "active" },
    { "id": "pn-b3", "pit_id": "pit-north", "name": "PN-B3", "elevation_rl_m": 10, "height_m": 10, "status": "active" },
    { "id": "pn-b4", "pit_id": "pit-north", "name": "PN-B4", "elevation_rl_m": 0, "height_m": 10, "status": "development" },
    { "id": "pn-b5", "pit_id": "pit-north", "name": "PN-B5", "elevation_rl_m": -10, "height_m": 10, "status": "planned" },
    { "id": "ps-b1", "pit_id": "pit-south", "name": "PS-B1", "elevation_rl_m": 35, "height_m": 10, "status": "active" },
    { "id": "ps-b2", "pit_id": "pit-south", "name": "PS-B2", "elevation_rl_m": 25, "height_m": 10, "status": "active" },
    { "id": "ps-b3", "pit_id": "pit-south", "name": "PS-B3", "elevation_rl_m": 15, "height_m": 10, "status": "development" }
  ],
  "blocks": [
    { "id": "pn-b2-01", "bench_id": "pn-b2", "code": "PN-B2-01", "tonnage_t": 45000, "ob_volume_bcm": 228000, "cv_gar": 5050, "tm_pct": 24.5, "ash_pct": 4.8, "sulphur_pct": 0.28, "sr": 5.07, "status": "active", "reserve_class": "proved" },
    { "id": "pn-b2-02", "bench_id": "pn-b2", "code": "PN-B2-02", "tonnage_t": 52000, "ob_volume_bcm": 270400, "cv_gar": 5120, "tm_pct": 23.8, "ash_pct": 4.5, "sulphur_pct": 0.30, "sr": 5.20, "status": "active", "reserve_class": "proved" },
    { "id": "pn-b2-03", "bench_id": "pn-b2", "code": "PN-B2-03", "tonnage_t": 48000, "ob_volume_bcm": 244800, "cv_gar": 4980, "tm_pct": 25.2, "ash_pct": 5.1, "sulphur_pct": 0.26, "sr": 5.10, "status": "planned", "reserve_class": "proved" },
    { "id": "pn-b3-01", "bench_id": "pn-b3", "code": "PN-B3-01", "tonnage_t": 55000, "ob_volume_bcm": 302500, "cv_gar": 5080, "tm_pct": 24.0, "ash_pct": 4.7, "sulphur_pct": 0.31, "sr": 5.50, "status": "active", "reserve_class": "proved" },
    { "id": "pn-b3-02", "bench_id": "pn-b3", "code": "PN-B3-02", "tonnage_t": 50000, "ob_volume_bcm": 270000, "cv_gar": 5020, "tm_pct": 24.8, "ash_pct": 4.9, "sulphur_pct": 0.29, "sr": 5.40, "status": "planned", "reserve_class": "proved" },
    { "id": "pn-b4-01", "bench_id": "pn-b4", "code": "PN-B4-01", "tonnage_t": 60000, "ob_volume_bcm": 348000, "cv_gar": 5150, "tm_pct": 23.5, "ash_pct": 4.4, "sulphur_pct": 0.32, "sr": 5.80, "status": "development", "reserve_class": "probable" },
    { "id": "ps-b1-01", "bench_id": "ps-b1", "code": "PS-B1-01", "tonnage_t": 42000, "ob_volume_bcm": 184800, "cv_gar": 4920, "tm_pct": 26.1, "ash_pct": 5.3, "sulphur_pct": 0.24, "sr": 4.40, "status": "active", "reserve_class": "proved" },
    { "id": "ps-b1-02", "bench_id": "ps-b1", "code": "PS-B1-02", "tonnage_t": 46000, "ob_volume_bcm": 211600, "cv_gar": 4880, "tm_pct": 26.8, "ash_pct": 5.5, "sulphur_pct": 0.22, "sr": 4.60, "status": "active", "reserve_class": "proved" },
    { "id": "ps-b2-01", "bench_id": "ps-b2", "code": "PS-B2-01", "tonnage_t": 48000, "ob_volume_bcm": 206400, "cv_gar": 4950, "tm_pct": 25.5, "ash_pct": 5.0, "sulphur_pct": 0.26, "sr": 4.30, "status": "active", "reserve_class": "proved" },
    { "id": "ps-b2-02", "bench_id": "ps-b2", "code": "PS-B2-02", "tonnage_t": 51000, "ob_volume_bcm": 219300, "cv_gar": 5010, "tm_pct": 25.0, "ash_pct": 4.8, "sulphur_pct": 0.28, "sr": 4.30, "status": "planned", "reserve_class": "proved" }
  ],
  "fleet": {
    "excavators": [
      { "id": "ex-01", "model": "Komatsu PC2000-8", "category": "large_hydraulic", "bucket_m3": 12, "status": "working", "current_block": "pn-b2-02", "org": "contractor_pama", "commissioned": "2022-03-15" },
      { "id": "ex-02", "model": "Komatsu PC2000-8", "category": "large_hydraulic", "bucket_m3": 12, "status": "working", "current_block": "pn-b3-01", "org": "contractor_pama", "commissioned": "2022-05-20" },
      { "id": "ex-03", "model": "Hitachi EX1200-6", "category": "large_hydraulic", "bucket_m3": 7, "status": "working", "current_block": "ps-b1-01", "org": "owner", "commissioned": "2021-08-10" },
      { "id": "ex-04", "model": "Hitachi EX1200-6", "category": "large_hydraulic", "bucket_m3": 7, "status": "breakdown", "breakdown_since": "2025-04-21T06:00:00Z", "breakdown_reason": "hydraulic_pump_failure", "org": "owner" },
      { "id": "ex-05", "model": "Caterpillar 374F", "category": "medium_hydraulic", "bucket_m3": 3.5, "status": "working", "current_block": "ps-b2-01", "org": "owner", "commissioned": "2023-02-05" }
    ],
    "dump_trucks": [
      { "id": "dt-001", "model": "Komatsu HD785-7", "payload_t": 91, "status": "working", "org": "contractor_pama" },
      { "id": "dt-002", "model": "Komatsu HD785-7", "payload_t": 91, "status": "working", "org": "contractor_pama" },
      { "id": "dt-003", "model": "Komatsu HD785-7", "payload_t": 91, "status": "working", "org": "contractor_pama" },
      { "id": "dt-004", "model": "Komatsu HD785-7", "payload_t": 91, "status": "maintenance", "org": "contractor_pama" },
      { "id": "dt-005", "model": "Caterpillar 777G", "payload_t": 100, "status": "working", "org": "owner" },
      { "id": "dt-006", "model": "Caterpillar 777G", "payload_t": 100, "status": "working", "org": "owner" },
      { "id": "dt-007", "model": "Caterpillar 777G", "payload_t": 100, "status": "working", "org": "owner" },
      { "id": "dt-008", "model": "Scania G460 (road truck)", "payload_t": 30, "status": "working", "org": "owner", "purpose": "coal_haul_to_port" }
    ],
    "dozers": [
      { "id": "dz-01", "model": "Komatsu D375A-8", "status": "working", "org": "contractor_pama" },
      { "id": "dz-02", "model": "Caterpillar D9R", "status": "working", "org": "owner" },
      { "id": "dz-03", "model": "Caterpillar D9R", "status": "working", "org": "owner" }
    ],
    "graders": [
      { "id": "gr-01", "model": "Caterpillar 16M", "status": "working", "org": "owner" }
    ],
    "drills": [
      { "id": "dr-01", "model": "Atlas Copco DML", "hole_diameter_mm": 203, "status": "working", "org": "contractor_pama" }
    ],
    "light_vehicles": { "count": 18, "types": ["Toyota Hilux", "Ford Ranger"] },
    "totals": { "excavators": 5, "dump_trucks": 8, "dozers": 3, "graders": 1, "drills": 1 }
  },
  "stockpiles": [
    { "id": "stp-rom-north", "name": "ROM Stockpile North", "type": "ROM", "pit_id": "pit-north", "capacity_t": 50000, "current_inventory_t": 28500, "avg_cv_gar": 5050, "oldest_coal_age_days": 8 },
    { "id": "stp-rom-south", "name": "ROM Stockpile South", "type": "ROM", "pit_id": "pit-south", "capacity_t": 40000, "current_inventory_t": 21300, "avg_cv_gar": 4950, "oldest_coal_age_days": 5 },
    { "id": "stp-product-a", "name": "Product Stockpile A (export)", "type": "product", "capacity_t": 80000, "current_inventory_t": 45200, "avg_cv_gar": 5100, "target_spec": "CV 5000+ GAR export grade", "oldest_coal_age_days": 14 },
    { "id": "stp-product-b", "name": "Product Stockpile B (DMO)", "type": "product", "capacity_t": 60000, "current_inventory_t": 32800, "avg_cv_gar": 4850, "target_spec": "CV 4800-5000 GAR DMO (PLN)", "oldest_coal_age_days": 6 }
  ],
  "infrastructure": {
    "haul_road_km": 12.5,
    "crusher": { "id": "crusher-1", "capacity_tph": 800, "type": "double_roll", "status": "operational" },
    "port_stockpile_t": 50000,
    "barge_loading": { "location": "Sungai Mahakam, Samboja Jetty", "capacity_tph": 1200 },
    "power_source": "Genset 2 × 1500 kVA + PLN 500 kVA",
    "water_pond_count": 4,
    "sediment_pond_count": 6,
    "weighbridge": { "count": 2, "capacity_t": 100, "brand": "Avery Weigh-Tronix", "integration": "Rinstrum indicator + modbus RTU" }
  },
  "buyer_mix": {
    "domestic_dmo": {
      "share_pct": 30,
      "customers": [
        { "name": "PLN Pembangkitan Tanjung Jati", "spec": "CV 4800 GAR", "annual_contract_t": 400000 },
        { "name": "PT Semen Indonesia (Tuban)", "spec": "CV 5000 GAR", "annual_contract_t": 200000 }
      ]
    },
    "export": {
      "share_pct": 70,
      "customers": [
        { "name": "Guangdong Energy Group (China)", "spec": "CV 5100 GAR", "annual_contract_t": 700000 },
        { "name": "Adani Power (India)", "spec": "CV 5000 GAR", "annual_contract_t": 500000 },
        { "name": "Spot market (various)", "spec": "varied", "annual_contract_t": 200000 }
      ]
    }
  },
  "connectivity": {
    "primary": "VSAT Ku-band (10 Mbps down / 2 Mbps up)",
    "secondary": "4G LTE (coverage 60% of mine site)",
    "site_to_hq_latency_ms_avg": 620,
    "edge_server_count": 2,
    "on_site_wifi_coverage": "Ops room + briefing room + weighbridge"
  }
}