It is the responsibility of the NSW Resources Regulator to ensure that land disturbed by exploration and mining activities is returned to a safe, stable and sustainable land use.

All exploration and mining title holders are required to lodge a security deposit with the department that covers the full rehabilitation costs. This requirement ensures that the NSW Government does not incur financial liabilities in the event of a title holder defaulting on their rehabilitation obligations. Further details are provided in our Policy: Rehabilitation security deposits and Guideline: Rehabilitation cost estimate.

The title holder is required to provide an estimate of rehabilitation costs for consideration by the Regulator when determining the security deposit amount. The amount must be consistent with the stage of the exploration project or mine. A Rehabilitation cost estimation tool and Rehabilitation cost estimation tool handbook is available to assist in calculating the security deposit for a site.

Our inspectors regularly assess the surface disturbance (or proposed disturbance) of a mine or exploration site to calculate the security deposit. This is known as the assessed deposit. Once the assessed deposit is determined, we advise the Mining, Exploration and Geoscience (part of Regional NSW), who vary the condition of the title and seek the additional funds - or in the case of satisfactory rehabilitation, returns some or all of the security deposit. Click below to view the list of recently reviewed assessed deposits determined by the Regulator as at 20 August 2021.

Enviro Mine Authority number Assessed security deposit
Abel Underground Coal MineML 1618 (1992), ML 1653 (1992)$4,741,000.00
Airly CollieryML 1331 (1992)$4,597,000.00
Angus Place CollieryCCL 704 (1973), ML 1424 (1992), ML 1699 (1992), ML 1720 (1992)$12,539,000.00
Argyle Sapphire MineM(MO)L 2 (1992)$15,000.00
Austral Brick Company - Marulan QuarryML 786 (1973), ML 866 (1973), PLL 1293 (1924)$124,000.00
Black SpringML 791 (1973)$34,000.00
Bloomfield MineCCL 761 (1973), ML 1738 (1992)$25,367,000.00
Brogans CreekML 6119 (1906), ML 6175 (1906), PL(MP)L 2903 (1906), PL(MP)L 2905 (1906), PLL 1178 (1924), PLL 1195 (1924), PLL 1216 (1924), PLL 1217 (1924), PLL 1265 (1924), PLL 1266 (1924), PLL 1268 (1924), PLL 501 (1924), PLL 502 (1924)$1,104,000.00
Broula King Gold MineML 1617 (1992)$1,982,000.00
Buckaroo MineML 919 (1973)$162,000.00
Bulli Seam OperationsCCL 724 (1973), ML 1473 (1992), MPL 200 (1973), MPL 201 (1973)$24,853,000.00
Byers PitML 1209 (1973), ML 1219 (1973), ML 267 (1973), ML 268 (1973), PLL 1294 (1924)$295,000.00
Canowindra Limestone MineM(MO)L 5 (1992)$186,000.00
Catherine Hill BayCCL 706 (1973)$12,283,000.00
Chain Valley CollieryCCL 706 (1973), CCL 707 (1973), ML 1051 (1906), ML 1052 (1906), ML 1308 (1906), MPL 1349 (1906), MPL 1389 (1906), MPL 1400 (1906), MPL 337 (1973), ML 1785 (1992)$11,449,000.00
Clarence CollieryML 1583 (1992)$285,000.00
Clean Teq Sunrise ProjectML 1770 (1992)$22,000.00
Crayfish Mineral Sands MineML 1735 (1992)$2,490,000.00
Cullen Valley MineML 1488 (1992), ML 1556 (1992), ML 1557 (1992), ML 1455 (1992)$2,460,000.00
Donaldson Open Cut Coal MineML 1461 (1992)$3,576,000.00
Dunns Swamp asset and pipelineMPL 487 (1906)$600,000.00
Endeavor MineML 158 (1973), ML 159 (1973), ML 160 (1973), ML 161 (1973), ML 930 (1973)$27,956,000.00
Enhance Place Open Cut Coal MineML 1422 (1992), ML 1458 (1992), ML 1520 (1992)$34,000.00
Excelsior Limestone QuarryMPL 318 (1973), PLL 1219 (1924), SL 664 (1906)$1,592,000.00
Galong Limestone MineML 1496 (1992), ML 1745 (1992)$5,393,000.00
Ginkgo Mineral Sands MineML 1504 (1992)$11,775,000.00
Gunnedah CollieryCCL 701 (1973)$12,567,000.00
Horsley Park Clay MineML 1636 (1992)$4,344,000.00
Liddell Coal OperationsML 1597 (1992)$44,898,000.00
Lightning Ridge Mineral Claims DistrictMC39006$100.00
Macquarie Coal ComplexML 1567 (1992)$29,707,900.00
Mandalong MineCCL 762 (1973), ML 1431 (1992), ML 1443 (1992), ML 1543 (1992), ML 1553 (1992), ML 1722 (1992), ML 1744 (1992), MPL 191 (1973)$15,073,000.00
Mangoola Coal MineML 1626 (1992), ML 1747 (1992)$63,501,000.00
Mannering CollieryCCL 719 (1973), CCL 721 (1973)$6,261,000.00
Marrangaroo QuarryML 1522 (1992), ML 1801 (1992), ML 4635 (1906), ML 4636 (1906), ML 6388 (1906), MPL 221 (1973), PLL 584 (1924), PLL 602 (1924)$979,000.00
Maules Creek Mine ComplexAUTH 346 (1973), CL 375 (1973), ML 1701 (1992), ML 1719 (1992)$112,076,000.00
Maxwell Infrastructure (formerly known as Drayton Mine)CL 229 (1973), CL 395 (1973), ML 1531 (1992)$80,095,000.00
Meadow Flat QuarryML 274 (1973)$75,000.00
Melville O/C and REACCL 701 (1973)$369,350.00
Metford Clay MineML 1523 (1992), ML 4865 (1906), ML 5090 (1906), ML 5848 (1906)$646,000.00
Mineral Hill MineEL 1999 (1973), EL 8334 (1992), ML 1695 (1992), ML 1712 (1992), ML 1778 (1992), ML 332 (1973), ML 333 (1973), ML 334 (1973), ML 335 (1973), ML 336 (1973), ML 337 (1973), ML 338 (1973), ML 339 (1973), ML 340 (1973), ML 5240 (1906), ML 5267 (1906), ML 5278 (1906), ML 5499 (1906), ML 5621 (1906), ML 5632 (1906), ML 6329 (1906), ML 6365 (1906)$7,247,000.00
Mogendoura MineML 748 (1973)$27,000.00
Moolarben CoalML 1605 (1992), ML 1606 (1992), ML 1715 (1992)$104,756,000.00
Mount Pleasant Coal MineML 1645 (1992), ML 1708 (1992), ML 1709 (1992), ML 1713 (1992), ML 1750 (1992), ML 1808 (1992)$73,448,673.00
Mount Thorley Warkworth ComplexCCL 753 (1973), ML 1412 (1992), ML 1590 (1992), ML 1751 (1992)$113,916,000.00
Mt Owen ComplexCCL 715 (1973), CL 358 (1973), CL 383 (1973), ML 1355 (1992), ML 1410 (1992), ML 1415 (1992), ML 1419 (1992), ML 1453 (1992), ML 1475 (1992), ML 1476 (1992), ML 1561 (1992), ML 1608 (1992), ML 1629 (1992), ML 1673 (1992), ML 1694 (1992), MPL 343 (1973), ML 1802 (1992), ML 1794 (1992)$95,063,000.00
Munmorah CollieryCCL 722 (1973)$1,460,000.00
Myuna Colliery ComplexML 1370 (1992), ML 1632 (1992), MPL 334 (1973)$10,649,000.00
Narrabri CollieryML 1609 (1992)$25,354,000.00
Nelungaloo Limestone MineM(MO)L 1 (1992)$202,000.00
Newstan and AwabaCCL 727 (1973), CCL 746 (1973), CCL 763 (1973), CCL 764 (1973), ML 1380 (1992), ML 1452 (1992), ML 1480 (1992), ML 1586 (1992), ML 1587 (1992), MPL 304 (1973), MPL 305 (1973), MPL 327 (1973), MPL 328 (1973), PLL 497 (1906)$30,179,000.00
Northparkes MinesML 1247 (1973), ML 1367 (1992), ML 1641 (1992), ML 1743 (1992)$46,149,000.00
Oaklands Kaolin MinePLL 1267 (1924)$235,000.00
Peak Gold MineCML 6 (1992), CML 7 (1992), CML 8 (1992), CML 9 (1992), ML 1483 (1992), MPL 854 (1906)$32,278,500.00
Ravensworth ComplexCCL 723 (1973), CCL 739 (1973), CL 378 (1973), CL 380 (1973), CL 580 (1973), ML 1325 (1992), ML 1357 (1992), ML 1393 (1992), ML 1502 (1992), ML 1576 (1992), ML 1669 (1992), ML 1683 (1992)$98,084,000.00
Ravensworth Underground MineML 1348 (1992), ML 1349 (1992), ML 1398 (1992), ML 1416 (1992), ML 1477 (1992), ML 1495 (1992), ML 1506 (1992), ML 1580 (1992), ML 1581 (1992), ML 1591 (1992), ML 1595 (1992), ML 1625 (1992), ML 1667 (1992), ML 1668 (1992), ML 1564 (1992)$10,973,500.00
Snapper Mineral Sands MineML 1621 (1992)$16,724,000.00
Southern OperationsML 5885 (1906)$3,893,742.00
Springvale CollieryCCL 733 (1973), CL 361 (1973), CL 377 (1973), CL 394 (1973), ML 1303 (1992), ML 1319 (1992), ML 1323 (1992), ML 1326 (1992), ML 1352 (1992), ML 1448 (1992), ML 1537 (1992), ML 1588 (1992), ML 1670 (1992), ML 1727 (1992), ML 204 (1906), ML 564 (1906), MPL 314 (1973), PLL 133 (1906)$25,987,000.00
Sulcor Limestone MineML 1470 (1992)$739,000.00
Swan Bay MineML 5938 (1906)$181,000.00
Tahmoor CollieryCCL 716 (1973), ML 1308 (1992), ML 1376 (1992), ML 1539 (1992), ML 1642 (1992)$27,334,000.00
Taronga Tin ML 1774 (1992)$26,500.00
Tarrawonga Coal MineML 1579 (1992), ML 1685 (1992), ML 1693 (1992), ML 1749 (1992)$49,375,000.00
Tomingley Gold MineML 1684 (1992)$8,637,000.00
United Wambo Joint VentureCCL 775 (1973)$20,139,000.00
Valley 3 Coal MineCCL 736 (1973)$0.01
Wambo ComplexCCL 743 (1973), CL 365 (1973), CL 374 (1973), CL 397 (1973), ML 1402 (1992), ML 1572 (1992), ML 1594 (1992), ML 1806 (1992)$105,674,000.00
Westside MineCCL 729 (1973)$87,500.00
Wilpinjong Coal MineML 1573 (1992), ML 1779 (1992)$60,653,000.00
Yeltara Mt Brown Gold MineML 1330 (1992)$44,000.00
Yeltara Mt Brown Gold MineML 1372 (1992)$15,000.00
Yeltara Mt Browne Gold MineML 1334 (1992)$13,000.00
Yeltara Mt Browne Gold Mine ML 1333 (1992)$26,000.00