Use "tangible progress" in a sentence

1. Over the past decade, attempts to improve international environmental governance have been made – most recently as part of high-level consultative group under the aegis of UNEP (Nairobi-Helsinki process) – but making tangible progress has so far proved difficult.

2. The training and deployment of mineral inspectors and diamond agents, the organization of alluvial miners into cooperatives and the construction of a centre for appraising and certifying rough diamonds all demonstrate tangible progress towards meeting the requirements for joining the Kimberley Process certification scheme