Large mulch fire burning for days likely caused by spontaneous

Smoke lingers as large mulch fire burns in the southeast Valley

Second fire at S. Salt Lake compost pile draws neighbors' ire - The Salt Lake Tribune

FRAMINGHAM MATTERS: Much about mulch: spontaneous combustion

Why does mulch catch on fire easily? - Quora

Important Fire Safety Facts for Forest Fire Prevention

What are some ways to prevent forest fires in Brazil and other countries that have huge forests, like Australia or Indonesia? - Quora

Why does mulch catch on fire easily? - Quora

Can a pile of mulch cause a fire? - Quora

Spontaneous combustion - Wikipedia