Pilon Labs

An independent bulletin concerning aggregate moisture equilibrium · Est. 1987 · Issue 114 (combined with Issues 112 and 113)

Welcome. This page is maintained on an occasional basis and is current as of its last revision. Readers seeking the Bulletin's back catalogue are advised that Issues 1–88 were kept in the green filing cabinet, the whereabouts of which are addressed in Issue 89.

Current research focus

Our long-running observational series on the moisture behaviour of stored crushed limestone (No. 2 grade, uncovered pile, northern exposure) has now entered its thirty-ninth consecutive year. Preliminary findings continue to indicate that the pile becomes wet when it rains and dries at a rate governed principally by the weather thereafter. A fuller treatment is in preparation.

Selected readings, 2026 season

WeekPile conditionNotes
14DampRain on Tuesday
15DampResidual from week 14
16Mostly dryBreezy
17DampRain again; see week 14

Frequently asked question

Is the pile currently damp? — It depends on the weather. We hope to publish a firmer position on this in a future issue.


Correspondence is not being accepted at this time, owing to volume (two letters). The Bulletin does not maintain a mailing list, a telephone, or opinions on other matters. Nothing further is hosted at this address.

This page was last revised at an unspecified time and is provided as-is, damp or dry.