it's a project that's concerned with conservation and preservation of the site and is many artefacts, which can fall into the category of methods of investigation...
there aren't any artefacts/sources because it's a modern initiative, but basically they realised that maintenance programs were failing and started the herculaneum conservation project. There are a few archaeologists involved, and there are quite a few things that have been done:
1. consolidation of structures ensuring buildings remain standing, allowing for further conservation-restoration work - M Castaldi
2. methods used on Insula Orientalis I, which is a single urban block of 3 houses, and the Suburban Baths to prevent rainwater damage; water pools rather than flows away because of drainage problems. solutions: roofs erected (temporary only, more permanent ones needed later), studies by water engineers have adapted ancient drainage measures to combat the modern problem
3. scientific research - a conservation scientist called G Torraca is trying to understand the processes undergone by plaster, wood, metal features etc to find out how to best conserve them.
does that seem like what you're after?
