Construction crossword

2. a process to change materials (waste) into new products to prevent waste of potentially useful materials
4. a set of six naturally occurring silicate minerals used commercially for their desirable physical properties
6. Originally built in 1923
8. Heavy construction equipment consisting of a boom, stick, bucket and cab on a rotating platform (known as the "house")
10. a truck used for transporting loose material (such as sand, gravel, or dirt) for construction
11. is the worker or tradesman who is in charge of a construction crew
14. professional working within the construction industry concerned with construction costs and contracts

1. refers to the human-made surroundings that provide the setting for human activity, ranging in scale from buildings and parks or green space to neighborhoods and cities that can often include their supporting infrastructure, such as water supply, or energy networks
3. a composite material composed of coarse granular material (the aggregate or filler) embedded in a hard matrix of material (the cement or binder) that fills the space among the aggregate particles and glues them together
5. (or steam roller) is a form of road roller – a type of heavy construction machinery used for levelling surfaces
7. a support beam used in construction
9. a type of machine, generally equipped with a hoist, wire ropes or chains, and sheaves, that can be used both to lift and lower materials and to move them horizontally
12. McGee's colour
13. Tom ? McGee