Indonesia’s construction industry is growing quickly, driven by residential and industrial building, alongside infrastructure development plans by the Indonesia’s construction industry is growing quickly, driven by residential and industrial building, alongside infrastructure development plans by the government. Sourcing skilled labor is still a time-intensive process, however, and often relies on personal networks and lengthy recruitment efforts. The founders of Gravel want to change that by making it easier to find workers and other construction professionals. The Jakarta-based startup announced today it has raised $14 million.