# Roger Erismann - **Website:** - **Primary alias:** `hammerdirt.ch` ## Description Hammerdirt is a Swiss-based brand focused on turning field observations into useful information. The venture has reduced its activities in Switzerland and is no longer active in plastic-waste work, waste monitoring, or reporting results from those activities, which it discontinued because the business was not economically sustainable. Its current focus is arboriculture and forestry, and it welcomes enquiries from those seeking a dependable team to bridge observation and information. Hammerdirt’s published work documents its experience in environmental research and analysis. Topics include plastic shotgun wads as persistent pollutants, freshwater litter patterns in Switzerland, and bacterial contamination in Lake Geneva. Its contracted projects have included Pla’stock, a citizen-science assessment of shoreline plastic pollution, and an online report and reproducible analysis pipeline for a nationwide shoreline litter survey commissioned by the Swiss Federal Office for the Environment. Other resources cover solid-waste field investigations, forest ecosystem services, and water-quality monitoring in the Baye de Montreux. Together, these projects reflect a practical, evidence-based approach to observation, analysis, and environmental communication. ## Industries - 🧪 Science and Education - 🧪 Environmental Science _(under Science and Education)_ ## Links - [github](https://github.com/hammerdirt) - [twitter](https://twitter.com/hammerdirt) ## Logos & icons - icon _(primary)_ — JPEG — [download](https://cdn.brandfetch.io/idGg_l65Ym/w/400/h/400/theme/dark/icon.jpeg?c=1bxid64Mup7aczewSAYMX&t=1793599324138) ## Colors | Name | Hex | Theme | | --- | --- | --- | | Twine | #c08d64 | accent | | Bistre | #3b2b1e | dark | | Regent St Blue | #a2d0e7 | light | ## Fonts - Georgia — asset _(custom)_ ## Imagery - banner _(primary)_ — JPEG — [download](https://cdn.brandfetch.io/idGg_l65Ym/w/1500/h/500/idRtNUAgNI.jpeg?c=1bxid64Mup7aczewSAYMX&t=1793599323936) --- _Source: _ _See [/llms.txt](/llms.txt) for a full list of agent-readable pages, and [/auth.md](/auth.md) for how agents authenticate._