Extraction and processing of amphibolite rock at the Michldorf quarry (Upper Palatinate)
Schotterwerke Michldorf GmbH
New on Amplifa
About us
Schotterwerke Michldorf GmbH operates a quarry with a crushing plant in Michldorf in the Upper Palatinate (Bavaria). The company extracts amphibolite rock and produces construction materials from it such as chippings, crushed stone, frost protection material, mixes, pre-screenings, cobbles, blasted rock and overburden. The production process includes clearing the overburden layer with a bulldozer, large-hole blasting with computer-assisted drilling, measuring and blasting technology (drilling depths up to 12 m), loading and transporting the muck pile with backhoe hydraulic excavators, wheel loaders and dump trucks, and crushing in primary crusher, secondary and impact mill stages. Screening lines classify the material into various grain fractions, and computer-controlled plant control systems and weighing systems enable loading and weighing onto trucks. In addition, the company accepts Z0 excavated soil. The approximately 15 employees supply customers from the construction industry, the rock industry and road construction. The company is a member of the Environmental Pact of Bavaria and was awarded the 'Blooming Business' (Blühender Betrieb) distinction in the Blühpakt Bayern (Bavaria Blossoming Pact) on 12.11.2025. Guided tours of the outdoor premises are offered.
- Site
- Michldorf (Leuchtenberg)
- Processes
- Drilling and blasting (large-hole blasting, computer-assisted drilling, measuring and blasting, Crushing (primary crusher, secondary crushing stage with various types of crushers), Impact mills (fine processing, grain shape generation), Classifying / screening (screening lines, grain fractions), Loading and transporting (backhoe hydraulic excavators, wheel loaders, dump trucks), Loading and weighing (computer-controlled plant control and weighing systems), Clearing the overburden layer with a bulldozer, Acceptance of excavated soil Z0
- Materials
- Amphibolite, Excavated soil Z0, Amphibolite (natural stone), Excavated soil Z0 (acceptance)
- Employees
- 15
- Industries
- Construction industry, Rock industry, Road construction
- 01
Clearing the overburden layer (bulldozer)
- 02
Drilling and blasting (large-hole blasting)
- 03
Loading and transporting (excavators, wheel loaders, dump trucks)
- 04
Crushing (primary crusher, secondary stage, impact mills)
- 05
Classifying (screening lines, grain fractions)
- 06
Loading and weighing (computer-controlled plant control)
Materials & processes
Amphibolite (natural stone)
Excavated soil Z0 (acceptance)
Sites & machinery
Michldorf quarry and crushing plant
DEQuarry/crushing plant (production and administration)
- Hydraulic drilling rig (drilling depths up to 12 m)
- Primary crusher
- Crusher (secondary crushing stage)
- Impact mills
- Screening lines
- Backhoe hydraulic excavators
- Wheel loaders
- Dump trucks
- Bulldozer (dozers)
- Computer-controlled weighing and loading systems
Typical parts
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Drilling and blasting (large-hole blasting, computer-assisted drilling, measuring and blastingBlasting/quarry extraction | – | – | – | – | Amphibolit |
| Crushing (primary crusher, secondary crushing stage with various types of crushers)Comminution/processing | – | – | – | – | Amphibolit |
| Impact mills (fine processing, grain shape generation)Comminution/processing | – | – | – | – | Amphibolit |
| Classifying / screening (screening lines, grain fractions)Classification/processing | – | – | – | – | Amphibolit |
| Loading and transporting (backhoe hydraulic excavators, wheel loaders, dump trucks)Transport/handling | – | – | – | – | Amphibolit |
| Loading and weighing (computer-controlled plant control and weighing systems)Loading/handling | – | – | – | – | Amphibolit |
| Clearing the overburden layer with a bulldozerQuarry extraction | – | – | – | – | Amphibolit |
| Acceptance of excavated soil Z0Disposal/excavated soil | – | – | – | – | Excavated soil |
| Production of amphibolite chippings, crushed stone, frost protection material, mixes,Construction material production/rock processing | – | – | – | – | Amphibolit |
10 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Hydraulic drilling rig | – | – | Drilling depths up to 12 m | – | Michldorf quarry |
| Primary crusher | – | – | – | – | Michldorf crushing plant |
| Crusher (secondary crushing stage, various types) | – | – | – | – | Michldorf crushing plant |
| Impact mills | – | – | – | – | Michldorf crushing plant |
| Screening lines | – | – | – | – | Michldorf crushing plant |
| Backhoe hydraulic excavators | – | – | – | – | Michldorf quarry |
| Wheel loaders | – | – | – | – | Michldorf quarry |
| Dump trucks (heavy-duty trucks) | – | – | – | – | Michldorf quarry |
| Bulldozer (dozers for overburden removal) | – | – | – | – | Michldorf quarry |
| Weighing and loading systems (computer-controlled plant control) | – | – | – | – | Michldorf crushing plant |
Additional services
Company history
- 2025-09
From September to December 2025, blasting takes place daily (announcement by the municipality of Leuchtenberg, 15.09.2025)
- 2025-11-12
Awarded as a 'Blooming Business' in the Blühpakt Bayern (Bavaria Blossoming Pact)