LEGO Underground Mining Station
Set #8709 · 2009 · 636 pieces · Substantial build
Set Details
- Set Number
- 8709
- Name
- Underground Mining Station
- Theme
- Power Miners
- Year
- 2009
- Pieces
- 636
- Complexity
- Substantial
- Build Time
- 2-4 hours
- Ages
- 10+
- Type
- Play-focused
About LEGO Underground Mining Station
LEGO Underground Mining Station (set #8709) is a large, detailed build with 636 pieces from the Power Miners theme, released in 2009. The Power Miners line features underground mining vehicles battling rock monsters. At 636 pieces, this is a substantial-level build with an estimated build time of 2-4 hours, suitable for ages 10+.
Set Highlights
- 636 pieces at substantial complexity — a 2-4 hours build.
- Compatible with all standard LEGO sets — bricks extend naturally into other sets you own.
- Play-focused build with interactive elements designed for 10+ builders.
Who Is This Set For?
Gift for Ages 10+
The substantial difficulty makes this accessible without being trivial — a well-matched gift for LEGO fans in the 10+ age range.
Weekend Build Project
636 pieces with an estimated 2-4 hours fits comfortably into a focused afternoon or weekend session.
Expanding a Power Miners Collection
A solid addition for collectors building out their Power Miners shelf. Introduces parts and builds that complement other sets from the same line.
Build Tips
A five-minute sort by color or piece type before starting saves time hunting for specific bricks mid-step.
Follow the numbered steps in sequence — structural elements early in the build support everything that comes after.
For active play sets, key connection points (hinges, turntables, clip joints) can loosen over time — a small dab of LEGO's own tube clutch lubricant on the stud resolves most looseness without damage.
Finding Instructions
Building instructions for LEGO Underground Mining Station (#8709) are available as a free PDF on LEGO.com. You can also upload a photo of this set to LegoFinder to identify it and access the instructions directly.
Underground Mining Station FAQ
Related Reading
More Power Miners Sets
See all Power Miners →
Also Released in 2009
All 2009 sets →Similar Build Difficulty
Sets at roughly the same piece count and complexity tier — different theme and year, but a similar build experience.
Need Instructions for Underground Mining Station?
Upload a photo of your LEGO Underground Mining Station set and get the building instructions PDF in seconds.
Upload a Photo Now