https://govtribe.com/category/unspsc/71100000-mining-services yearly 0.8 https://govtribe.com/category/unspsc/71101609-underground-ventilation-construction-service yearly 0.8 https://govtribe.com/category/unspsc/71101607-underground-roofing-construction-service yearly 0.8 https://govtribe.com/category/unspsc/71101500-mine-exploration yearly 0.8 https://govtribe.com/category/unspsc/71101700-extraction yearly 0.8 https://govtribe.com/category/unspsc/71101606-underground-seal-installation-service yearly 0.8 https://govtribe.com/category/unspsc/71101605-mine-horizontal-drilling-service yearly 0.8 https://govtribe.com/category/unspsc/71101604-slope-shaft-construction-service yearly 0.8 https://govtribe.com/category/unspsc/71101600-mine-drilling-blasting-and-construction-services yearly 0.8 https://govtribe.com/category/unspsc/71101603-mine-bore-hole-drilling-service yearly 0.8 https://govtribe.com/category/unspsc/71101608-bunker-construction-service yearly 0.8 https://govtribe.com/category/unspsc/71101710-mine-machinery-rental-or-leasing-service yearly 0.8