Outdoor Belt Conveyor for Gravel

I need a durable belt conveyor designed to transfer gravel over a distance of 150 meters. The conveyor will be used in an outdoor environment, so it must be able to withstand various weather conditions.

Key Requirements:
- Capable of transporting gravel
- Length: 150 meters
- Suitable for outdoor use

Ideal Skills and Experience:
- Experience with conveyor system design
- Knowledge of materials suitable for outdoor equipment
- Background in handling heavy-duty transport systems

Please provide a detailed plan and timeline.