Verprontly Ready to dig? Know what's below. April is National Safe Digging Month Call 811 USIC There are more than 20 million miles of underground utilities in the United States. Digging without knowing the location of these utilities is dangerous. Stay safe by calling 811 before you dig. For more safety tips, visit www.Pa1Call.org ppl three business days before digging. It's the LAW! PPL L Pennsylvania 811 LUGI Energy Services UG Energy to do more Verprontly Ready to dig ? Know what's below . April is National Safe Digging Month Call 811 USIC There are more than 20 million miles of underground utilities in the United States . Digging without knowing the location of these utilities is dangerous . Stay safe by calling 811 before you dig . For more safety tips , visit www.Pa1Call.org ppl three business days before digging . It's the LAW ! PPL L Pennsylvania 811 LUGI Energy Services UG Energy to do more