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Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece and leave with the element ID LEGO asks for, or a link to buy the part.

The "Abandoned" Mine

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21166 The "Abandoned" Mine

242 pieces in 95 part and color combinations, plus 2 minifigures.

The official piece count includes the 6 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

Before you call it missing

Builders who report a missing piece often find it in one of these places. Tick each one off as you look.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Light Bluish Gray 85 pieces

  • Brick 1 x 2 Light Bluish Gray Part 3004 Element 4211388 ×5
  • Brick 1 x 2 x 2 with Inside Stud Holder Light Bluish Gray Part 3245c Element 4211564 ×3
  • Brick 1 x 4 Light Bluish Gray Part 3010 Element 4211394 ×1
  • Brick 1 x 8 Light Bluish Gray Part 3008 Element 4211392 ×1
  • Brick 2 x 2 Light Bluish Gray Part 3003 Element 4211387 ×13
  • Brick 2 x 2 x 3 Light Bluish Gray Part 30145 Element 4211650 ×3
  • Brick 2 x 4 Light Bluish Gray Part 3001 Element 4211385 ×4
  • Brick 2 x 6 Light Bluish Gray Part 2456 Element 4274668 or 4211795 ×1
  • Brick 2 x 8 Light Bluish Gray Part 3007 Element 6037399 or 4211391 ×1
  • Brick Sloped 30° 1 x 2 x 2/3 Light Bluish Gray Part 85984 Element 4568637 ×3
  • Brick Special 1 x 2 x 5 with Groove Light Bluish Gray Part 88393 Element 4582153 ×2
  • Panel 1 x 4 x 1 with Rounded Corners [Thin Wall] Light Bluish Gray Part 15207 Element 6071299 ×1
  • Plate 1 x 1 Light Bluish Gray Part 3024 Element 4211399 1 spare in the box ×12
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×1
  • Plate 1 x 6 Light Bluish Gray Part 3666 Element 4211438 ×1
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×13
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×7
  • Plate 2 x 6 Light Bluish Gray Part 3795 Element 4211452 or 3795194 ×4
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Light Bluish Gray Part 87580 Element 6126082 or 4565393 ×3
  • Technic Brick 1 x 2 [2 Pin Holes] Light Bluish Gray Part 32000 Element 4211541 ×4
  • Tile 1 x 6 with Groove Light Bluish Gray Part 6636 Element 4211549 ×2

Reddish Brown 41 pieces

  • Brick 1 x 2 Reddish Brown Part 3004 Element 4613963 or 4211149 ×1
  • Brick 1 x 4 Reddish Brown Part 3010 Element 4211225 ×1
  • Brick 1 x 6 Reddish Brown Part 3009 Element 4211193 ×3
  • Brick 2 x 2 Reddish Brown Part 3003 Element 4211210 ×1
  • Brick 2 x 4 Reddish Brown Part 3001 Element 4211201 ×1
  • Brick 2 x 6 Reddish Brown Part 2456 Element 4286200 or 4216615 ×1
  • Panel 1 x 1 x 1 Corner Reddish Brown Part 6231 Element 4645400 or 4519960 ×3
  • Plate 2 x 10 Reddish Brown Part 3832 Element 4211214 ×2
  • Plate 2 x 2 Reddish Brown Part 3022 Element 4613975 or 4216695 ×3
  • Plate 2 x 4 Reddish Brown Part 3020 Element 4211186 ×3
  • Plate 4 x 6 Reddish Brown Part 3032 Element 4271874 or 4211213 ×1
  • Plate Round 1 x 1 with Solid Stud Reddish Brown Part 6141 Element 4216581 1 spare in the box ×6
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Reddish Brown Part 15573 Element 6092590 ×8
  • Technic Brick 1 x 1 with Pin Hole Reddish Brown Part 6541 Element 4620075 or 4528461 ×1
  • Technic Brick 1 x 2 [2 Pin Holes] Reddish Brown Part 32000 Element 6151461 ×6

Dark Bluish Gray 30 pieces

  • Brick Special 1 x 1 with Stud on 1 Side Dark Bluish Gray Part 87087 Element 4558955 ×2
  • Brick Special 1 x 4 with 4 Studs on One Side Dark Bluish Gray Part 30414 Element 4210725 ×1
  • Equipment Shovel Blocky Dark Bluish Gray Part 18791 Element 6189223 ×1
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 Also in Black ×2
  • Plate 4 x 4 Corner Dark Bluish Gray Part 2639 Element 4539429 ×1
  • Plate 6 x 6 Dark Bluish Gray Part 3958 Element 4211134 ×3
  • Plate 6 x 8 Dark Bluish Gray Part 3036 Element 4210794 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Bluish Gray Part 87580 Element 6126083 or 4565322 ×11
  • Plate Special 4 x 6, Studs on 3 Edges Dark Bluish Gray Part 6180 Element 6199511 or 6000647 ×1
  • Technic Axle 5.5 with Stop [Rounded Short End] Dark Bluish Gray Part 59426 Element 4508553 ×1
  • Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×1
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Dark Bluish Gray Part 60483 Element 6265093 or 6006141 ×1
  • Technic Beam 1 x 2 Thin Dark Bluish Gray Part 41677 Element 6338422 or 4210980 ×1
  • Tile Special 2 x 2 Inverted Dark Bluish Gray Part 11203 Element 6013082 ×3

Black 23 pieces

  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Black Part 73983 Element 6102782 or 74011 ×4
  • Minifig Head Special, Cube with Rear Ledge, Pixelated Red Face Print (Spider) Black Part 19727pr0005 Element 6335371 or 6162540 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate 2 x 3 Black Part 3021 Element 302126 ×1
  • Plate 2 x 4 Black Part 3020 Element 302026 Also in Dark Bluish Gray ×1
  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 1 spare in the box ×4
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×1
  • Plate Special 1 x 2 [Side Handle Closed Ends] Black Part 48336 Element 4225201 ×2
  • Plate Special 1 x 2 with Clip Horizontal on End Black Part 63868 Element 6336989 or 4535739 ×4
  • Technic Axle Connector Double Flexible [Rubber] Black Part 45590 Element 4198367 ×1
  • Technic Beam 1 x 5 Thin with Axle Holes on Ends Black Part 11478 Element 6327028 or 6030286 ×1
  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 1 spare in the box ×1
  • Tile 2 x 3 Black Part 26603 Element 6162892 ×1

Medium Nougat 18 pieces

  • Brick 1 x 2 with Reddish Brown and Dark Brown Lines Print Medium Nougat Part 3004pr0014 Element 6097024 ×2
  • Brick Special 1 x 1 with Handle Medium Nougat Part 2921 Element 6170572 or 6102959 ×8
  • Brick Special 1 x 2 with Masonry Brick Profile Medium Nougat Part 98283 Element 4656783 ×7
  • Tile 2 x 2 with Dark Brown Minecraft Grid Print (Crafting Table) Medium Nougat Part 3068bpr0236 Element 6097003 ×1

Orange 9 pieces

  • Brick 1 x 2 Orange Part 3004 Element 4613981 or 4121739 ×1
  • Brick 2 x 2 Orange Part 3003 Element 4153825 or 4119643 ×4
  • Brick 2 x 2 Corner Orange Part 2357 Element 6212079 or 4130347 ×1
  • Brick Sloped 33° 3 x 2 Orange Part 3298 Element 4121742 ×1
  • Plate 2 x 6 Orange Part 3795 Element 4121741 ×1
  • Plate 6 x 10 Orange Part 3033 Element 6034497 or 4505159 ×1

Bright Green 5 pieces

  • Plant, Flower 2 x 2 Leaves - Angular Bright Green Part 4727 Element 4143562 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Bright Green Part 87580 Element 6389695 or 4565388 ×3

Tan 5 pieces

  • Plate Round 1 x 1 with Solid Stud Tan Part 6141 Element 4161734 or 614105 1 spare in the box ×4
  • Technic Pin 3/4 Tan Part 32002 Element 6663097 or 6013938 1 spare in the box ×1

Medium Azure 4 pieces

  • Plate Round 1 x 1 with Solid Stud Medium Azure Part 6141 Element 6102986 1 spare in the box ×4

Trans-Orange 4 pieces

  • Brick 1 x 1 Trans-Orange Part 3005 Element 6514209 or 6240550 ×1
  • Plate 1 x 1 Trans-Orange Part 3024 Element 6513961 or 6252040 1 spare in the box ×3

Green 3 pieces

  • Plate 2 x 4 Green Part 3020 Element 302028 ×1
  • Plate 4 x 6 Green Part 3032 Element 4116671 ×2

Blue 2 pieces

  • Plate 6 x 8 Blue Part 3036 Element 303673 or 303623 ×1
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×1

Dark Brown 2 pieces

  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Dark Brown Part 64644 Element 4538950 ×2

Trans-Yellow 2 pieces

  • Plate 1 x 1 Trans-Yellow Part 3024 Element 6513966 or 6252045 1 spare in the box ×2

White 2 pieces

  • Plate Special 2 x 2 with Bar Frame Octagonal, Reinforced, Completely Round Studs White Part 75937 Element 6009016 ×1
  • Tile Special 1 x 1 with Clip with Rounded Edges White Part 15712 Element 6348055 or 6054551 ×1

Yellow 2 pieces

  • Brick Sloped 30° 1 x 2 x 2/3 Yellow Part 85984 Element 4550348 ×1
  • Technic Axle 3 Yellow Part 4519 Element 6130007 ×1

Flat Silver 1 piece

  • Tool Pickaxe Blocky, Double Flat Silver Part 18789 Element 6104264 ×1

Medium Lavender 1 piece

  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Medium Lavender Part 24866 Element 6209684 1 spare in the box ×1

Red 1 piece

  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Red Part 24866 Element 6206148 1 spare in the box ×1

Trans-Bright Green 1 piece

  • Minifig Head Special, Cube with Slime, 3 Dark Green Squares Print Trans-Bright Green Part 19729pr2183 Element 6510306 or 6335370 ×1

Trans-Dark Blue 1 piece

  • Brick Sloped 45° 2 x 2 Trans-Dark Blue Part 3039 Element 6514101 or 6244887 ×1

Minifigures 2 figures

  • Steve Minifigure, checked as a whole figure ×1
  • Zombie Minifigure, checked as a whole figure ×1

Tick each piece as you find it, or mark it missing.

When a piece really is missing

Ask LEGO

LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for the set number and each piece's element ID, the number printed beside the piece in the parts list at the back of the instructions. This checker lists both.

Request a replacement from LEGO

Buy the piece

Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from older or second-hand sets.

Keep a record

Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.

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